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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-11-26 10:27:01 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-11-26 10:27:01 +0100
commitc48b90f84a11ddcd6fee133c4929d8da037667ac (patch)
tree1f31cc4961ce70e11aeb450f87ffe139dc83f981
parentMerge branch 'pm-cpuidle' (diff)
parentcpufreq: Register drivers only after CPU devices have been registered (diff)
downloadlinux-dev-c48b90f84a11ddcd6fee133c4929d8da037667ac.tar.xz
linux-dev-c48b90f84a11ddcd6fee133c4929d8da037667ac.zip
Merge branch 'pm-cpufreq'
* pm-cpufreq: (23 commits) cpufreq: Register drivers only after CPU devices have been registered cpufreq: Add NULL checks to show() and store() methods of cpufreq cpufreq: intel_pstate: Fix plain int as pointer warning from sparse cpufreq: sun50i: Fix CPU speed bin detection cpufreq: powernv: fix stack bloat and hard limit on number of CPUs cpufreq: Clarify the comment in cpufreq_set_policy() cpufreq: vexpress-spc: find and skip duplicates when merging frequencies cpufreq: vexpress-spc: use macros instead of hardcoded values for cluster ids cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init cpufreq: imx-cpufreq-dt: Correct i.MX8MN's default speed grade value cpufreq: vexpress-spc: fix some coding style issues cpufreq: vexpress-spc: remove lots of debug messages cpufreq: vexpress-spc: drop unnessary cpufreq_arm_bL_ops abstraction cpufreq: merge arm_big_little and vexpress-spc cpufreq: scpi: remove stale/outdated comment about the driver ARM: dts: Add OPP-V2 table for AM3517 cpufreq: ti-cpufreq: Add support for AM3517 ARM: dts: omap36xx: using OPP1G needs to control the abb_ldo cpufreq: ti-cpufreq: omap36xx use "cpu0","vbb" if run in multi_regulator mode ARM: dts: omap3: bulk convert compatible to be explicitly ti,omap3430 or ti,omap3630 or ti,am3517 ...
-rw-r--r--Documentation/devicetree/bindings/arm/omap/omap.txt30
-rw-r--r--Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt6
-rw-r--r--MAINTAINERS5
-rw-r--r--arch/arm/boot/dts/am3517.dtsi31
-rw-r--r--arch/arm/boot/dts/am3517_mt_ventoux.dts2
-rw-r--r--arch/arm/boot/dts/logicpd-som-lv-35xx-devkit.dts2
-rw-r--r--arch/arm/boot/dts/logicpd-torpedo-35xx-devkit.dts2
-rw-r--r--arch/arm/boot/dts/omap3-beagle-xm.dts2
-rw-r--r--arch/arm/boot/dts/omap3-beagle.dts2
-rw-r--r--arch/arm/boot/dts/omap3-cm-t3530.dts2
-rw-r--r--arch/arm/boot/dts/omap3-cm-t3730.dts2
-rw-r--r--arch/arm/boot/dts/omap3-devkit8000-lcd43.dts2
-rw-r--r--arch/arm/boot/dts/omap3-devkit8000-lcd70.dts2
-rw-r--r--arch/arm/boot/dts/omap3-devkit8000.dts2
-rw-r--r--arch/arm/boot/dts/omap3-gta04.dtsi2
-rw-r--r--arch/arm/boot/dts/omap3-ha-lcd.dts2
-rw-r--r--arch/arm/boot/dts/omap3-ha.dts2
-rw-r--r--arch/arm/boot/dts/omap3-igep0020-rev-f.dts2
-rw-r--r--arch/arm/boot/dts/omap3-igep0020.dts2
-rw-r--r--arch/arm/boot/dts/omap3-igep0030-rev-g.dts2
-rw-r--r--arch/arm/boot/dts/omap3-igep0030.dts2
-rw-r--r--arch/arm/boot/dts/omap3-ldp.dts2
-rw-r--r--arch/arm/boot/dts/omap3-lilly-a83x.dtsi2
-rw-r--r--arch/arm/boot/dts/omap3-lilly-dbb056.dts2
-rw-r--r--arch/arm/boot/dts/omap3-n9.dts2
-rw-r--r--arch/arm/boot/dts/omap3-n950-n9.dtsi7
-rw-r--r--arch/arm/boot/dts/omap3-n950.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-alto35.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-chestnut43.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-gallop43.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-palo35.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-palo43.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-summit.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-tobi.dts2
-rw-r--r--arch/arm/boot/dts/omap3-overo-storm-tobiduo.dts2
-rw-r--r--arch/arm/boot/dts/omap3-pandora-1ghz.dts2
-rw-r--r--arch/arm/boot/dts/omap3-sbc-t3530.dts2
-rw-r--r--arch/arm/boot/dts/omap3-sbc-t3730.dts2
-rw-r--r--arch/arm/boot/dts/omap3-sniper.dts2
-rw-r--r--arch/arm/boot/dts/omap3-thunder.dts2
-rw-r--r--arch/arm/boot/dts/omap3-zoom3.dts2
-rw-r--r--arch/arm/boot/dts/omap3430-sdp.dts2
-rw-r--r--arch/arm/boot/dts/omap34xx.dtsi66
-rw-r--r--arch/arm/boot/dts/omap36xx.dtsi65
-rw-r--r--drivers/cpufreq/Kconfig.arm12
-rw-r--r--drivers/cpufreq/Makefile2
-rw-r--r--drivers/cpufreq/arm_big_little.c658
-rw-r--r--drivers/cpufreq/arm_big_little.h43
-rw-r--r--drivers/cpufreq/cpufreq-dt-platdev.c2
-rw-r--r--drivers/cpufreq/cpufreq.c18
-rw-r--r--drivers/cpufreq/imx-cpufreq-dt.c20
-rw-r--r--drivers/cpufreq/intel_pstate.c30
-rw-r--r--drivers/cpufreq/powernv-cpufreq.c17
-rw-r--r--drivers/cpufreq/s3c64xx-cpufreq.c7
-rw-r--r--drivers/cpufreq/scpi-cpufreq.c2
-rw-r--r--drivers/cpufreq/sun50i-cpufreq-nvmem.c25
-rw-r--r--drivers/cpufreq/ti-cpufreq.c119
-rw-r--r--drivers/cpufreq/vexpress-spc-cpufreq.c584
58 files changed, 949 insertions, 874 deletions
diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index b301f753ed2c..e77635c5422c 100644
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -43,7 +43,7 @@ SoC Families:
- OMAP2 generic - defaults to OMAP2420
compatible = "ti,omap2"
-- OMAP3 generic - defaults to OMAP3430
+- OMAP3 generic
compatible = "ti,omap3"
- OMAP4 generic - defaults to OMAP4430
compatible = "ti,omap4"
@@ -51,6 +51,8 @@ SoC Families:
compatible = "ti,omap5"
- DRA7 generic - defaults to DRA742
compatible = "ti,dra7"
+- AM33x generic
+ compatible = "ti,am33xx"
- AM43x generic - defaults to AM4372
compatible = "ti,am43"
@@ -63,12 +65,14 @@ SoCs:
- OMAP3430
compatible = "ti,omap3430", "ti,omap3"
+ legacy: "ti,omap34xx" - please do not use any more
- AM3517
compatible = "ti,am3517", "ti,omap3"
- OMAP3630
- compatible = "ti,omap36xx", "ti,omap3"
-- AM33xx
- compatible = "ti,am33xx", "ti,omap3"
+ compatible = "ti,omap3630", "ti,omap3"
+ legacy: "ti,omap36xx" - please do not use any more
+- AM335x
+ compatible = "ti,am33xx"
- OMAP4430
compatible = "ti,omap4430", "ti,omap4"
@@ -110,19 +114,19 @@ SoCs:
- AM4372
compatible = "ti,am4372", "ti,am43"
-Boards:
+Boards (incomplete list of examples):
- OMAP3 BeagleBoard : Low cost community board
- compatible = "ti,omap3-beagle", "ti,omap3"
+ compatible = "ti,omap3-beagle", "ti,omap3430", "ti,omap3"
- OMAP3 Tobi with Overo : Commercial expansion board with daughter board
- compatible = "gumstix,omap3-overo-tobi", "gumstix,omap3-overo", "ti,omap3"
+ compatible = "gumstix,omap3-overo-tobi", "gumstix,omap3-overo", "ti,omap3430", "ti,omap3"
- OMAP4 SDP : Software Development Board
- compatible = "ti,omap4-sdp", "ti,omap4430"
+ compatible = "ti,omap4-sdp", "ti,omap4430", "ti,omap4"
- OMAP4 PandaBoard : Low cost community board
- compatible = "ti,omap4-panda", "ti,omap4430"
+ compatible = "ti,omap4-panda", "ti,omap4430", "ti,omap4"
- OMAP4 DuoVero with Parlor : Commercial expansion board with daughter board
compatible = "gumstix,omap4-duovero-parlor", "gumstix,omap4-duovero", "ti,omap4430", "ti,omap4";
@@ -134,16 +138,16 @@ Boards:
compatible = "variscite,var-dvk-om44", "variscite,var-som-om44", "ti,omap4460", "ti,omap4";
- OMAP3 EVM : Software Development Board for OMAP35x, AM/DM37x
- compatible = "ti,omap3-evm", "ti,omap3"
+ compatible = "ti,omap3-evm", "ti,omap3630", "ti,omap3"
- AM335X EVM : Software Development Board for AM335x
- compatible = "ti,am335x-evm", "ti,am33xx", "ti,omap3"
+ compatible = "ti,am335x-evm", "ti,am33xx"
- AM335X Bone : Low cost community board
- compatible = "ti,am335x-bone", "ti,am33xx", "ti,omap3"
+ compatible = "ti,am335x-bone", "ti,am33xx"
- AM3359 ICEv2 : Low cost Industrial Communication Engine EVM.
- compatible = "ti,am3359-icev2", "ti,am33xx", "ti,omap3"
+ compatible = "ti,am3359-icev2", "ti,am33xx"
- AM335X OrionLXm : Substation Automation Platform
compatible = "novatech,am335x-lxm", "ti,am33xx"
diff --git a/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt b/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt
index 0c38e4b8fc51..1758051798fe 100644
--- a/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt
+++ b/Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt
@@ -15,12 +15,16 @@ In 'cpus' nodes:
In 'operating-points-v2' table:
- compatible: Should be
- - 'operating-points-v2-ti-cpu' for am335x, am43xx, and dra7xx/am57xx SoCs
+ - 'operating-points-v2-ti-cpu' for am335x, am43xx, and dra7xx/am57xx,
+ omap34xx, omap36xx and am3517 SoCs
- syscon: A phandle pointing to a syscon node representing the control module
register space of the SoC.
Optional properties:
--------------------
+- "vdd-supply", "vbb-supply": to define two regulators for dra7xx
+- "cpu0-supply", "vbb-supply": to define two regulators for omap36xx
+
For each opp entry in 'operating-points-v2' table:
- opp-supported-hw: Two bitfields indicating:
1. Which revision of the SoC the OPP is supported by
diff --git a/MAINTAINERS b/MAINTAINERS
index e4f170d8bc29..b6cd9082a3f0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4269,14 +4269,13 @@ F: include/linux/cpufreq.h
F: include/linux/sched/cpufreq.h
F: tools/testing/selftests/cpufreq/
-CPU FREQUENCY DRIVERS - ARM BIG LITTLE
+CPU FREQUENCY DRIVERS - VEXPRESS SPC ARM BIG LITTLE
M: Viresh Kumar <viresh.kumar@linaro.org>
M: Sudeep Holla <sudeep.holla@arm.com>
L: linux-pm@vger.kernel.org
W: http://www.arm.com/products/processors/technologies/biglittleprocessing.php
S: Maintained
-F: drivers/cpufreq/arm_big_little.h
-F: drivers/cpufreq/arm_big_little.c
+F: drivers/cpufreq/vexpress-spc-cpufreq.c
CPU POWER MONITORING SUBSYSTEM
M: Thomas Renninger <trenn@suse.com>
diff --git a/arch/arm/boot/dts/am3517.dtsi b/arch/arm/boot/dts/am3517.dtsi
index bf3002009b00..76f819f4ba48 100644
--- a/arch/arm/boot/dts/am3517.dtsi
+++ b/arch/arm/boot/dts/am3517.dtsi
@@ -16,6 +16,37 @@
can = &hecc;
};
+ cpus {
+ cpu: cpu@0 {
+ /* Based on OMAP3630 variants OPP50 and OPP100 */
+ operating-points-v2 = <&cpu0_opp_table>;
+
+ clock-latency = <300000>; /* From legacy driver */
+ };
+ };
+
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+ /*
+ * AM3517 TRM only lists 600MHz @ 1.2V, but omap36xx
+ * appear to operate at 300MHz as well. Since AM3517 only
+ * lists one operating voltage, it will remain fixed at 1.2V
+ */
+ opp50-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ opp-microvolt = <1200000>;
+ opp-supported-hw = <0xffffffff 0xffffffff>;
+ opp-suspend;
+ };
+
+ opp100-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1200000>;
+ opp-supported-hw = <0xffffffff 0xffffffff>;
+ };
+ };
+
ocp@68000000 {
am35x_otg_hs: am35x_otg_hs@5c040000 {
compatible = "ti,omap3-musb";
diff --git a/arch/arm/boot/dts/am3517_mt_ventoux.dts b/arch/arm/boot/dts/am3517_mt_ventoux.dts
index e507e4ae0d88..e7d7124a34ba 100644
--- a/arch/arm/boot/dts/am3517_mt_ventoux.dts
+++ b/arch/arm/boot/dts/am3517_mt_ventoux.dts
@@ -8,7 +8,7 @@
/ {
model = "TeeJet Mt.Ventoux";
- compatible = "teejet,mt_ventoux", "ti,omap3";
+ compatible = "teejet,mt_ventoux", "ti,am3517", "ti,omap3";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/logicpd-som-lv-35xx-devkit.dts b/arch/arm/boot/dts/logicpd-som-lv-35xx-devkit.dts
index f7a841a28865..2a0a98fe67f0 100644
--- a/arch/arm/boot/dts/logicpd-som-lv-35xx-devkit.dts
+++ b/arch/arm/boot/dts/logicpd-som-lv-35xx-devkit.dts
@@ -9,5 +9,5 @@
/ {
model = "LogicPD Zoom OMAP35xx SOM-LV Development Kit";
- compatible = "logicpd,dm3730-som-lv-devkit", "ti,omap3";
+ compatible = "logicpd,dm3730-som-lv-devkit", "ti,omap3430", "ti,omap3";
};
diff --git a/arch/arm/boot/dts/logicpd-torpedo-35xx-devkit.dts b/arch/arm/boot/dts/logicpd-torpedo-35xx-devkit.dts
index 7675bc3fa868..57bae2aa910e 100644
--- a/arch/arm/boot/dts/logicpd-torpedo-35xx-devkit.dts
+++ b/arch/arm/boot/dts/logicpd-torpedo-35xx-devkit.dts
@@ -9,5 +9,5 @@
/ {
model = "LogicPD Zoom OMAP35xx Torpedo Development Kit";
- compatible = "logicpd,dm3730-torpedo-devkit", "ti,omap3";
+ compatible = "logicpd,dm3730-torpedo-devkit", "ti,omap3430", "ti,omap3";
};
diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 1aa99fc1487a..125ed933ca75 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3 BeagleBoard xM";
- compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3";
+ compatible = "ti,omap3-beagle-xm", "ti,omap3630", "ti,omap36xx", "ti,omap3";
cpus {
cpu@0 {
diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index e3df3c166902..4ed3f93f5841 100644
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3 BeagleBoard";
- compatible = "ti,omap3-beagle", "ti,omap3";
+ compatible = "ti,omap3-beagle", "ti,omap3430", "ti,omap3";
cpus {
cpu@0 {
diff --git a/arch/arm/boot/dts/omap3-cm-t3530.dts b/arch/arm/boot/dts/omap3-cm-t3530.dts
index 76e52c78cbb4..32dbaeaed147 100644
--- a/arch/arm/boot/dts/omap3-cm-t3530.dts
+++ b/arch/arm/boot/dts/omap3-cm-t3530.dts
@@ -9,7 +9,7 @@
/ {
model = "CompuLab CM-T3530";
- compatible = "compulab,omap3-cm-t3530", "ti,omap34xx", "ti,omap3";
+ compatible = "compulab,omap3-cm-t3530", "ti,omap3430", "ti,omap34xx", "ti,omap3";
/* Regulator to trigger the reset signal of the Wifi module */
mmc2_sdio_reset: regulator-mmc2-sdio-reset {
diff --git a/arch/arm/boot/dts/omap3-cm-t3730.dts b/arch/arm/boot/dts/omap3-cm-t3730.dts
index 6e944dfa0f3d..683819bf0915 100644
--- a/arch/arm/boot/dts/omap3-cm-t3730.dts
+++ b/arch/arm/boot/dts/omap3-cm-t3730.dts
@@ -9,7 +9,7 @@
/ {
model = "CompuLab CM-T3730";
- compatible = "compulab,omap3-cm-t3730", "ti,omap36xx", "ti,omap3";
+ compatible = "compulab,omap3-cm-t3730", "ti,omap3630", "ti,omap36xx", "ti,omap3";
wl12xx_vmmc2: wl12xx_vmmc2 {
compatible = "regulator-fixed";
diff --git a/arch/arm/boot/dts/omap3-devkit8000-lcd43.dts b/arch/arm/boot/dts/omap3-devkit8000-lcd43.dts
index a80fc60bc773..afed85078ad8 100644
--- a/arch/arm/boot/dts/omap3-devkit8000-lcd43.dts
+++ b/arch/arm/boot/dts/omap3-devkit8000-lcd43.dts
@@ -11,7 +11,7 @@
#include "omap3-devkit8000-lcd-common.dtsi"
/ {
model = "TimLL OMAP3 Devkit8000 with 4.3'' LCD panel";
- compatible = "timll,omap3-devkit8000", "ti,omap3";
+ compatible = "timll,omap3-devkit8000", "ti,omap3430", "ti,omap3";
lcd0: display {
panel-timing {
diff --git a/arch/arm/boot/dts/omap3-devkit8000-lcd70.dts b/arch/arm/boot/dts/omap3-devkit8000-lcd70.dts
index 0753776071f8..07c51a105c0d 100644
--- a/arch/arm/boot/dts/omap3-devkit8000-lcd70.dts
+++ b/arch/arm/boot/dts/omap3-devkit8000-lcd70.dts
@@ -11,7 +11,7 @@
#include "omap3-devkit8000-lcd-common.dtsi"
/ {
model = "TimLL OMAP3 Devkit8000 with 7.0'' LCD panel";
- compatible = "timll,omap3-devkit8000", "ti,omap3";
+ compatible = "timll,omap3-devkit8000", "ti,omap3430", "ti,omap3";
lcd0: display {
panel-timing {
diff --git a/arch/arm/boot/dts/omap3-devkit8000.dts b/arch/arm/boot/dts/omap3-devkit8000.dts
index faafc48d8f61..162d0726b008 100644
--- a/arch/arm/boot/dts/omap3-devkit8000.dts
+++ b/arch/arm/boot/dts/omap3-devkit8000.dts
@@ -7,7 +7,7 @@
#include "omap3-devkit8000-common.dtsi"
/ {
model = "TimLL OMAP3 Devkit8000";
- compatible = "timll,omap3-devkit8000", "ti,omap3";
+ compatible = "timll,omap3-devkit8000", "ti,omap3430", "ti,omap3";
aliases {
display1 = &dvi0;
diff --git a/arch/arm/boot/dts/omap3-gta04.dtsi b/arch/arm/boot/dts/omap3-gta04.dtsi
index b6ef1a7ac8a4..409a758c99f1 100644
--- a/arch/arm/boot/dts/omap3-gta04.dtsi
+++ b/arch/arm/boot/dts/omap3-gta04.dtsi
@@ -11,7 +11,7 @@
/ {
model = "OMAP3 GTA04";
- compatible = "ti,omap3-gta04", "ti,omap36xx", "ti,omap3";
+ compatible = "ti,omap3-gta04", "ti,omap3630", "ti,omap36xx", "ti,omap3";
cpus {
cpu@0 {
diff --git a/arch/arm/boot/dts/omap3-ha-lcd.dts b/arch/arm/boot/dts/omap3-ha-lcd.dts
index badb9b3c8897..c9ecbc45c8e2 100644
--- a/arch/arm/boot/dts/omap3-ha-lcd.dts
+++ b/arch/arm/boot/dts/omap3-ha-lcd.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3 HEAD acoustics LCD-baseboard with TAO3530 SOM";
- compatible = "headacoustics,omap3-ha-lcd", "technexion,omap3-tao3530", "ti,omap34xx", "ti,omap3";
+ compatible = "headacoustics,omap3-ha-lcd", "technexion,omap3-tao3530", "ti,omap3430", "ti,omap34xx", "ti,omap3";
};
&omap3_pmx_core {
diff --git a/arch/arm/boot/dts/omap3-ha.dts b/arch/arm/boot/dts/omap3-ha.dts
index a5365252bfbe..35c4e15abeb7 100644
--- a/arch/arm/boot/dts/omap3-ha.dts
+++ b/arch/arm/boot/dts/omap3-ha.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3 HEAD acoustics baseboard with TAO3530 SOM";
- compatible = "headacoustics,omap3-ha", "technexion,omap3-tao3530", "ti,omap34xx", "ti,omap3";
+ compatible = "headacoustics,omap3-ha", "technexion,omap3-tao3530", "ti,omap3430", "ti,omap34xx", "ti,omap3";
};
&omap3_pmx_core {
diff --git a/arch/arm/boot/dts/omap3-igep0020-rev-f.dts b/arch/arm/boot/dts/omap3-igep0020-rev-f.dts
index 03dcd05fb8a0..d134ce1cffc0 100644
--- a/arch/arm/boot/dts/omap3-igep0020-rev-f.dts
+++ b/arch/arm/boot/dts/omap3-igep0020-rev-f.dts
@@ -10,7 +10,7 @@
/ {
model = "IGEPv2 Rev. F (TI OMAP AM/DM37x)";
- compatible = "isee,omap3-igep0020-rev-f", "ti,omap36xx", "ti,omap3";
+ compatible = "isee,omap3-igep0020-rev-f", "ti,omap3630", "ti,omap36xx", "ti,omap3";
/* Regulator to trigger the WL_EN signal of the Wifi module */
lbep5clwmc_wlen: regulator-lbep5clwmc-wlen {
diff --git a/arch/arm/boot/dts/omap3-igep0020.dts b/arch/arm/boot/dts/omap3-igep0020.dts
index 6d0519e3dfd0..e341535a7162 100644
--- a/arch/arm/boot/dts/omap3-igep0020.dts
+++ b/arch/arm/boot/dts/omap3-igep0020.dts
@@ -10,7 +10,7 @@
/ {
model = "IGEPv2 Rev. C (TI OMAP AM/DM37x)";
- compatible = "isee,omap3-igep0020", "ti,omap36xx", "ti,omap3";
+ compatible = "isee,omap3-igep0020", "ti,omap3630", "ti,omap36xx", "ti,omap3";
vmmcsdio_fixed: fixedregulator-mmcsdio {
compatible = "regulator-fixed";
diff --git a/arch/arm/boot/dts/omap3-igep0030-rev-g.dts b/arch/arm/boot/dts/omap3-igep0030-rev-g.dts
index 060acd1e803a..9ca1d0f61964 100644
--- a/arch/arm/boot/dts/omap3-igep0030-rev-g.dts
+++ b/arch/arm/boot/dts/omap3-igep0030-rev-g.dts
@@ -10,7 +10,7 @@
/ {
model = "IGEP COM MODULE Rev. G (TI OMAP AM/DM37x)";
- compatible = "isee,omap3-igep0030-rev-g", "ti,omap36xx", "ti,omap3";
+ compatible = "isee,omap3-igep0030-rev-g", "ti,omap3630", "ti,omap36xx", "ti,omap3";
/* Regulator to trigger the WL_EN signal of the Wifi module */
lbep5clwmc_wlen: regulator-lbep5clwmc-wlen {
diff --git a/arch/arm/boot/dts/omap3-igep0030.dts b/arch/arm/boot/dts/omap3-igep0030.dts
index 25170bd3c573..32f31035daa2 100644
--- a/arch/arm/boot/dts/omap3-igep0030.dts
+++ b/arch/arm/boot/dts/omap3-igep0030.dts
@@ -10,7 +10,7 @@
/ {
model = "IGEP COM MODULE Rev. E (TI OMAP AM/DM37x)";
- compatible = "isee,omap3-igep0030", "ti,omap36xx", "ti,omap3";
+ compatible = "isee,omap3-igep0030", "ti,omap3630", "ti,omap36xx", "ti,omap3";
vmmcsdio_fixed: fixedregulator-mmcsdio {
compatible = "regulator-fixed";
diff --git a/arch/arm/boot/dts/omap3-ldp.dts b/arch/arm/boot/dts/omap3-ldp.dts
index 9a5fde2d9bce..ec9ba04ef43b 100644
--- a/arch/arm/boot/dts/omap3-ldp.dts
+++ b/arch/arm/boot/dts/omap3-ldp.dts
@@ -10,7 +10,7 @@
/ {
model = "TI OMAP3430 LDP (Zoom1 Labrador)";
- compatible = "ti,omap3-ldp", "ti,omap3";
+ compatible = "ti,omap3-ldp", "ti,omap3430", "ti,omap3";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi
index c22833d4e568..73d477898ec2 100644
--- a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi
+++ b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi
@@ -7,7 +7,7 @@
/ {
model = "INCOstartec LILLY-A83X module (DM3730)";
- compatible = "incostartec,omap3-lilly-a83x", "ti,omap36xx", "ti,omap3";
+ compatible = "incostartec,omap3-lilly-a83x", "ti,omap3630", "ti,omap36xx", "ti,omap3";
chosen {
bootargs = "console=ttyO0,115200n8 vt.global_cursor_default=0 consoleblank=0";
diff --git a/arch/arm/boot/dts/omap3-lilly-dbb056.dts b/arch/arm/boot/dts/omap3-lilly-dbb056.dts
index fec335400074..ecb4ef738e07 100644
--- a/arch/arm/boot/dts/omap3-lilly-dbb056.dts
+++ b/arch/arm/boot/dts/omap3-lilly-dbb056.dts
@@ -8,7 +8,7 @@
/ {
model = "INCOstartec LILLY-DBB056 (DM3730)";
- compatible = "incostartec,omap3-lilly-dbb056", "incostartec,omap3-lilly-a83x", "ti,omap36xx", "ti,omap3";
+ compatible = "incostartec,omap3-lilly-dbb056", "incostartec,omap3-lilly-a83x", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&twl {
diff --git a/arch/arm/boot/dts/omap3-n9.dts b/arch/arm/boot/dts/omap3-n9.dts
index 74c0ff2350d3..2495a696cec6 100644
--- a/arch/arm/boot/dts/omap3-n9.dts
+++ b/arch/arm/boot/dts/omap3-n9.dts
@@ -12,7 +12,7 @@
/ {
model = "Nokia N9";
- compatible = "nokia,omap3-n9", "ti,omap36xx", "ti,omap3";
+ compatible = "nokia,omap3-n9", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&i2c2 {
diff --git a/arch/arm/boot/dts/omap3-n950-n9.dtsi b/arch/arm/boot/dts/omap3-n950-n9.dtsi
index 6681d4519e97..a075b63f3087 100644
--- a/arch/arm/boot/dts/omap3-n950-n9.dtsi
+++ b/arch/arm/boot/dts/omap3-n950-n9.dtsi
@@ -11,13 +11,6 @@
cpus {
cpu@0 {
cpu0-supply = <&vcc>;
- operating-points = <
- /* kHz uV */
- 300000 1012500
- 600000 1200000
- 800000 1325000
- 1000000 1375000
- >;
};
};
diff --git a/arch/arm/boot/dts/omap3-n950.dts b/arch/arm/boot/dts/omap3-n950.dts
index 9886bf8b90ab..31d47a1fad84 100644
--- a/arch/arm/boot/dts/omap3-n950.dts
+++ b/arch/arm/boot/dts/omap3-n950.dts
@@ -12,7 +12,7 @@
/ {
model = "Nokia N950";
- compatible = "nokia,omap3-n950", "ti,omap36xx", "ti,omap3";
+ compatible = "nokia,omap3-n950", "ti,omap3630", "ti,omap36xx", "ti,omap3";
keys {
compatible = "gpio-keys";
diff --git a/arch/arm/boot/dts/omap3-overo-storm-alto35.dts b/arch/arm/boot/dts/omap3-overo-storm-alto35.dts
index 18338576c41d..7f04dfad8203 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-alto35.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-alto35.dts
@@ -14,5 +14,5 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Alto35";
- compatible = "gumstix,omap3-overo-alto35", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-alto35", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
diff --git a/arch/arm/boot/dts/omap3-overo-storm-chestnut43.dts b/arch/arm/boot/dts/omap3-overo-storm-chestnut43.dts
index f204c8af8281..bc5a04e03336 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-chestnut43.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-chestnut43.dts
@@ -14,7 +14,7 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Chestnut43";
- compatible = "gumstix,omap3-overo-chestnut43", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-chestnut43", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-overo-storm-gallop43.dts b/arch/arm/boot/dts/omap3-overo-storm-gallop43.dts
index c633f7cee68e..065c31cbf0e2 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-gallop43.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-gallop43.dts
@@ -14,7 +14,7 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Gallop43";
- compatible = "gumstix,omap3-overo-gallop43", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-gallop43", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-overo-storm-palo35.dts b/arch/arm/boot/dts/omap3-overo-storm-palo35.dts
index fb88ebc9858c..e38c1c51392c 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-palo35.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-palo35.dts
@@ -14,7 +14,7 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Palo35";
- compatible = "gumstix,omap3-overo-palo35", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-palo35", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-overo-storm-palo43.dts b/arch/arm/boot/dts/omap3-overo-storm-palo43.dts
index 76cca00d97b6..e6dc23159c4d 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-palo43.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-palo43.dts
@@ -14,7 +14,7 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Palo43";
- compatible = "gumstix,omap3-overo-palo43", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-palo43", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-overo-storm-summit.dts b/arch/arm/boot/dts/omap3-overo-storm-summit.dts
index cc081a9e4c1e..587c08ce282d 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-summit.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-summit.dts
@@ -14,7 +14,7 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Summit";
- compatible = "gumstix,omap3-overo-summit", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-summit", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-overo-storm-tobi.dts b/arch/arm/boot/dts/omap3-overo-storm-tobi.dts
index 1de41c0826e0..f57de6010994 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-tobi.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-tobi.dts
@@ -14,6 +14,6 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on Tobi";
- compatible = "gumstix,omap3-overo-tobi", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-tobi", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
diff --git a/arch/arm/boot/dts/omap3-overo-storm-tobiduo.dts b/arch/arm/boot/dts/omap3-overo-storm-tobiduo.dts
index 9ed13118ed8e..281af6c113be 100644
--- a/arch/arm/boot/dts/omap3-overo-storm-tobiduo.dts
+++ b/arch/arm/boot/dts/omap3-overo-storm-tobiduo.dts
@@ -14,5 +14,5 @@
/ {
model = "OMAP36xx/AM37xx/DM37xx Gumstix Overo on TobiDuo";
- compatible = "gumstix,omap3-overo-tobiduo", "gumstix,omap3-overo", "ti,omap36xx", "ti,omap3";
+ compatible = "gumstix,omap3-overo-tobiduo", "gumstix,omap3-overo", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
diff --git a/arch/arm/boot/dts/omap3-pandora-1ghz.dts b/arch/arm/boot/dts/omap3-pandora-1ghz.dts
index 81b957f33c9f..ea509956d7ac 100644
--- a/arch/arm/boot/dts/omap3-pandora-1ghz.dts
+++ b/arch/arm/boot/dts/omap3-pandora-1ghz.dts
@@ -16,7 +16,7 @@
/ {
model = "Pandora Handheld Console 1GHz";
- compatible = "openpandora,omap3-pandora-1ghz", "ti,omap36xx", "ti,omap3";
+ compatible = "openpandora,omap3-pandora-1ghz", "ti,omap3630", "ti,omap36xx", "ti,omap3";
};
&omap3_pmx_core2 {
diff --git a/arch/arm/boot/dts/omap3-sbc-t3530.dts b/arch/arm/boot/dts/omap3-sbc-t3530.dts
index ae96002abb3b..24bf3fd86641 100644
--- a/arch/arm/boot/dts/omap3-sbc-t3530.dts
+++ b/arch/arm/boot/dts/omap3-sbc-t3530.dts
@@ -8,7 +8,7 @@
/ {
model = "CompuLab SBC-T3530 with CM-T3530";
- compatible = "compulab,omap3-sbc-t3530", "compulab,omap3-cm-t3530", "ti,omap34xx", "ti,omap3";
+ compatible = "compulab,omap3-sbc-t3530", "compulab,omap3-cm-t3530", "ti,omap3430", "ti,omap34xx", "ti,omap3";
aliases {
display0 = &dvi0;
diff --git a/arch/arm/boot/dts/omap3-sbc-t3730.dts b/arch/arm/boot/dts/omap3-sbc-t3730.dts
index 7de6df16fc17..eb3893b9535e 100644
--- a/arch/arm/boot/dts/omap3-sbc-t3730.dts
+++ b/arch/arm/boot/dts/omap3-sbc-t3730.dts
@@ -8,7 +8,7 @@
/ {
model = "CompuLab SBC-T3730 with CM-T3730";
- compatible = "compulab,omap3-sbc-t3730", "compulab,omap3-cm-t3730", "ti,omap36xx", "ti,omap3";
+ compatible = "compulab,omap3-sbc-t3730", "compulab,omap3-cm-t3730", "ti,omap3630", "ti,omap36xx", "ti,omap3";
aliases {
display0 = &dvi0;
diff --git a/arch/arm/boot/dts/omap3-sniper.dts b/arch/arm/boot/dts/omap3-sniper.dts
index 40a87330e8c3..b6879cdc5c13 100644
--- a/arch/arm/boot/dts/omap3-sniper.dts
+++ b/arch/arm/boot/dts/omap3-sniper.dts
@@ -9,7 +9,7 @@
/ {
model = "LG Optimus Black";
- compatible = "lg,omap3-sniper", "ti,omap36xx", "ti,omap3";
+ compatible = "lg,omap3-sniper", "ti,omap3630", "ti,omap36xx", "ti,omap3";
cpus {
cpu@0 {
diff --git a/arch/arm/boot/dts/omap3-thunder.dts b/arch/arm/boot/dts/omap3-thunder.dts
index 6276e7079b36..64221e3b3477 100644
--- a/arch/arm/boot/dts/omap3-thunder.dts
+++ b/arch/arm/boot/dts/omap3-thunder.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3 Thunder baseboard with TAO3530 SOM";
- compatible = "technexion,omap3-thunder", "technexion,omap3-tao3530", "ti,omap34xx", "ti,omap3";
+ compatible = "technexion,omap3-thunder", "technexion,omap3-tao3530", "ti,omap3430", "ti,omap34xx", "ti,omap3";
};
&omap3_pmx_core {
diff --git a/arch/arm/boot/dts/omap3-zoom3.dts b/arch/arm/boot/dts/omap3-zoom3.dts
index db3a2fe84e99..d240e39f2151 100644
--- a/arch/arm/boot/dts/omap3-zoom3.dts
+++ b/arch/arm/boot/dts/omap3-zoom3.dts
@@ -9,7 +9,7 @@
/ {
model = "TI Zoom3";
- compatible = "ti,omap3-zoom3", "ti,omap36xx", "ti,omap3";
+ compatible = "ti,omap3-zoom3", "ti,omap3630", "ti,omap36xx", "ti,omap3";
cpus {
cpu@0 {
diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
index 0abd61108a53..7bfde8aac7ae 100644
--- a/arch/arm/boot/dts/omap3430-sdp.dts
+++ b/arch/arm/boot/dts/omap3430-sdp.dts
@@ -8,7 +8,7 @@
/ {
model = "TI OMAP3430 SDP";
- compatible = "ti,omap3430-sdp", "ti,omap3";
+ compatible = "ti,omap3430-sdp", "ti,omap3430", "ti,omap3";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/omap34xx.dtsi b/arch/arm/boot/dts/omap34xx.dtsi
index 7b09cbee8bb8..c4dd9801840d 100644
--- a/arch/arm/boot/dts/omap34xx.dtsi
+++ b/arch/arm/boot/dts/omap34xx.dtsi
@@ -16,19 +16,67 @@
/ {
cpus {
cpu: cpu@0 {
- /* OMAP343x/OMAP35xx variants OPP1-5 */
- operating-points = <
- /* kHz uV */
- 125000 975000
- 250000 1075000
- 500000 1200000
- 550000 1270000
- 600000 1350000
- >;
+ /* OMAP343x/OMAP35xx variants OPP1-6 */
+ operating-points-v2 = <&cpu0_opp_table>;
+
clock-latency = <300000>; /* From legacy driver */
};
};
+ /* see Documentation/devicetree/bindings/opp/opp.txt */
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp1-125000000 {
+ opp-hz = /bits/ 64 <125000000>;
+ /*
+ * we currently only select the max voltage from table
+ * Table 3-3 of the omap3530 Data sheet (SPRS507F).
+ * Format is: <target min max>
+ */
+ opp-microvolt = <975000 975000 975000>;
+ /*
+ * first value is silicon revision bit mask
+ * second one 720MHz Device Identification bit mask
+ */
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp2-250000000 {
+ opp-hz = /bits/ 64 <250000000>;
+ opp-microvolt = <1075000 1075000 1075000>;
+ opp-supported-hw = <0xffffffff 3>;
+ opp-suspend;
+ };
+
+ opp3-500000000 {
+ opp-hz = /bits/ 64 <500000000>;
+ opp-microvolt = <1200000 1200000 1200000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp4-550000000 {
+ opp-hz = /bits/ 64 <550000000>;
+ opp-microvolt = <1275000 1275000 1275000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp5-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1350000 1350000 1350000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp6-720000000 {
+ opp-hz = /bits/ 64 <720000000>;
+ opp-microvolt = <1350000 1350000 1350000>;
+ /* only high-speed grade omap3530 devices */
+ opp-supported-hw = <0xffffffff 2>;
+ turbo-mode;
+ };
+ };
+
ocp@68000000 {
omap3_pmx_core2: pinmux@480025d8 {
compatible = "ti,omap3-padconf", "pinctrl-single";
diff --git a/arch/arm/boot/dts/omap36xx.dtsi b/arch/arm/boot/dts/omap36xx.dtsi
index 1e552f08f120..c618cb257d00 100644
--- a/arch/arm/boot/dts/omap36xx.dtsi
+++ b/arch/arm/boot/dts/omap36xx.dtsi
@@ -19,16 +19,65 @@
};
cpus {
- /* OMAP3630/OMAP37xx 'standard device' variants OPP50 to OPP130 */
+ /* OMAP3630/OMAP37xx variants OPP50 to OPP130 and OPP1G */
cpu: cpu@0 {
- operating-points = <
- /* kHz uV */
- 300000 1012500
- 600000 1200000
- 800000 1325000
- >;
- clock-latency = <300000>; /* From legacy driver */
+ operating-points-v2 = <&cpu0_opp_table>;
+
+ vbb-supply = <&abb_mpu_iva>;
+ clock-latency = <300000>; /* From omap-cpufreq driver */
+ };
+ };
+
+ /* see Documentation/devicetree/bindings/opp/opp.txt */
+ cpu0_opp_table: opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp50-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ /*
+ * we currently only select the max voltage from table
+ * Table 4-19 of the DM3730 Data sheet (SPRS685B)
+ * Format is: cpu0-supply: <target min max>
+ * vbb-supply: <target min max>
+ */
+ opp-microvolt = <1012500 1012500 1012500>,
+ <1012500 1012500 1012500>;
+ /*
+ * first value is silicon revision bit mask
+ * second one is "speed binned" bit mask
+ */
+ opp-supported-hw = <0xffffffff 3>;
+ opp-suspend;
+ };
+
+ opp100-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1200000 1200000 1200000>,
+ <1200000 1200000 1200000>;
+ opp-supported-hw = <0xffffffff 3>;
+ };
+
+ opp130-800000000 {
+ opp-hz = /bits/ 64 <800000000>;
+ opp-microvolt = <1325000 1325000 1325000>,
+ <1325000 1325000 1325000>;
+ opp-supported-hw = <0xffffffff 3>;
};
+
+ opp1g-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-microvolt = <1375000 1375000 1375000>,
+ <1375000 1375000 1375000>;
+ /* only on am/dm37x with speed-binned bit set */
+ opp-supported-hw = <0xffffffff 2>;
+ turbo-mode;
+ };
+ };
+
+ opp_supply_mpu_iva: opp_supply {
+ compatible = "ti,omap-opp-supply";
+ ti,absolute-max-voltage-uv = <1375000>;
};
ocp@68000000 {
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index a905796f7f85..3858d86cf409 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -49,14 +49,6 @@ config ARM_ARMADA_8K_CPUFREQ
If in doubt, say N.
-# big LITTLE core layer and glue drivers
-config ARM_BIG_LITTLE_CPUFREQ
- tristate "Generic ARM big LITTLE CPUfreq driver"
- depends on ARM_CPU_TOPOLOGY && HAVE_CLK
- select PM_OPP
- help
- This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
-
config ARM_SCPI_CPUFREQ
tristate "SCPI based CPUfreq driver"
depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
@@ -69,7 +61,9 @@ config ARM_SCPI_CPUFREQ
config ARM_VEXPRESS_SPC_CPUFREQ
tristate "Versatile Express SPC based CPUfreq driver"
- depends on ARM_BIG_LITTLE_CPUFREQ && ARCH_VEXPRESS_SPC
+ depends on ARM_CPU_TOPOLOGY && HAVE_CLK
+ depends on ARCH_VEXPRESS_SPC
+ select PM_OPP
help
This add the CPUfreq driver support for Versatile Express
big.LITTLE platforms using SPC for power management.
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 9a9f5ccd13d9..f6670c4abbb0 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -47,8 +47,6 @@ obj-$(CONFIG_X86_SFI_CPUFREQ) += sfi-cpufreq.o
##################################################################################
# ARM SoC drivers
-obj-$(CONFIG_ARM_BIG_LITTLE_CPUFREQ) += arm_big_little.o
-
obj-$(CONFIG_ARM_ARMADA_37XX_CPUFREQ) += armada-37xx-cpufreq.o
obj-$(CONFIG_ARM_ARMADA_8K_CPUFREQ) += armada-8k-cpufreq.o
obj-$(CONFIG_ARM_BRCMSTB_AVS_CPUFREQ) += brcmstb-avs-cpufreq.o
diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c
deleted file mode 100644
index 7fe52fcddcf1..000000000000
--- a/drivers/cpufreq/arm_big_little.c
+++ /dev/null
@@ -1,658 +0,0 @@
-/*
- * ARM big.LITTLE Platforms CPUFreq support
- *
- * Copyright (C) 2013 ARM Ltd.
- * Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
- *
- * Copyright (C) 2013 Linaro.
- * Viresh Kumar <viresh.kumar@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/clk.h>
-#include <linux/cpu.h>
-#include <linux/cpufreq.h>
-#include <linux/cpumask.h>
-#include <linux/cpu_cooling.h>
-#include <linux/export.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/of_platform.h>
-#include <linux/pm_opp.h>
-#include <linux/slab.h>
-#include <linux/topology.h>
-#include <linux/types.h>
-
-#include "arm_big_little.h"
-
-/* Currently we support only two clusters */
-#define A15_CLUSTER 0
-#define A7_CLUSTER 1
-#define MAX_CLUSTERS 2
-
-#ifdef CONFIG_BL_SWITCHER
-#include <asm/bL_switcher.h>
-static bool bL_switching_enabled;
-#define is_bL_switching_enabled() bL_switching_enabled
-#define set_switching_enabled(x) (bL_switching_enabled = (x))
-#else
-#define is_bL_switching_enabled() false
-#define set_switching_enabled(x) do { } while (0)
-#define bL_switch_request(...) do { } while (0)
-#define bL_switcher_put_enabled() do { } while (0)
-#define bL_switcher_get_enabled() do { } while (0)
-#endif
-
-#define ACTUAL_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq << 1 : freq)
-#define VIRT_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq >> 1 : freq)
-
-static struct thermal_cooling_device *cdev[MAX_CLUSTERS];
-static const struct cpufreq_arm_bL_ops *arm_bL_ops;
-static struct clk *clk[MAX_CLUSTERS];
-static struct cpufreq_frequency_table *freq_table[MAX_CLUSTERS + 1];
-static atomic_t cluster_usage[MAX_CLUSTERS + 1];
-
-static unsigned int clk_big_min; /* (Big) clock frequencies */
-static unsigned int clk_little_max; /* Maximum clock frequency (Little) */
-
-static DEFINE_PER_CPU(unsigned int, physical_cluster);
-static DEFINE_PER_CPU(unsigned int, cpu_last_req_freq);
-
-static struct mutex cluster_lock[MAX_CLUSTERS];
-
-static inline int raw_cpu_to_cluster(int cpu)
-{
- return topology_physical_package_id(cpu);
-}
-
-static inline int cpu_to_cluster(int cpu)
-{
- return is_bL_switching_enabled() ?
- MAX_CLUSTERS : raw_cpu_to_cluster(cpu);
-}
-
-static unsigned int find_cluster_maxfreq(int cluster)
-{
- int j;
- u32 max_freq = 0, cpu_freq;
-
- for_each_online_cpu(j) {
- cpu_freq = per_cpu(cpu_last_req_freq, j);
-
- if ((cluster == per_cpu(physical_cluster, j)) &&
- (max_freq < cpu_freq))
- max_freq = cpu_freq;
- }
-
- pr_debug("%s: cluster: %d, max freq: %d\n", __func__, cluster,
- max_freq);
-
- return max_freq;
-}
-
-static unsigned int clk_get_cpu_rate(unsigned int cpu)
-{
- u32 cur_cluster = per_cpu(physical_cluster, cpu);
- u32 rate = clk_get_rate(clk[cur_cluster]) / 1000;
-
- /* For switcher we use virtual A7 clock rates */
- if (is_bL_switching_enabled())
- rate = VIRT_FREQ(cur_cluster, rate);
-
- pr_debug("%s: cpu: %d, cluster: %d, freq: %u\n", __func__, cpu,
- cur_cluster, rate);
-
- return rate;
-}
-
-static unsigned int bL_cpufreq_get_rate(unsigned int cpu)
-{
- if (is_bL_switching_enabled()) {
- pr_debug("%s: freq: %d\n", __func__, per_cpu(cpu_last_req_freq,
- cpu));
-
- return per_cpu(cpu_last_req_freq, cpu);
- } else {
- return clk_get_cpu_rate(cpu);
- }
-}
-
-static unsigned int
-bL_cpufreq_set_rate(u32 cpu, u32 old_cluster, u32 new_cluster, u32 rate)
-{
- u32 new_rate, prev_rate;
- int ret;
- bool bLs = is_bL_switching_enabled();
-
- mutex_lock(&cluster_lock[new_cluster]);
-
- if (bLs) {
- prev_rate = per_cpu(cpu_last_req_freq, cpu);
- per_cpu(cpu_last_req_freq, cpu) = rate;
- per_cpu(physical_cluster, cpu) = new_cluster;
-
- new_rate = find_cluster_maxfreq(new_cluster);
- new_rate = ACTUAL_FREQ(new_cluster, new_rate);
- } else {
- new_rate = rate;
- }
-
- pr_debug("%s: cpu: %d, old cluster: %d, new cluster: %d, freq: %d\n",
- __func__, cpu, old_cluster, new_cluster, new_rate);
-
- ret = clk_set_rate(clk[new_cluster], new_rate * 1000);
- if (!ret) {
- /*
- * FIXME: clk_set_rate hasn't returned an error here however it
- * may be that clk_change_rate failed due to hardware or
- * firmware issues and wasn't able to report that due to the
- * current design of the clk core layer. To work around this
- * problem we will read back the clock rate and check it is
- * correct. This needs to be removed once clk core is fixed.
- */
- if (clk_get_rate(clk[new_cluster]) != new_rate * 1000)
- ret = -EIO;
- }
-
- if (WARN_ON(ret)) {
- pr_err("clk_set_rate failed: %d, new cluster: %d\n", ret,
- new_cluster);
- if (bLs) {
- per_cpu(cpu_last_req_freq, cpu) = prev_rate;
- per_cpu(physical_cluster, cpu) = old_cluster;
- }
-
- mutex_unlock(&cluster_lock[new_cluster]);
-
- return ret;
- }
-
- mutex_unlock(&cluster_lock[new_cluster]);
-
- /* Recalc freq for old cluster when switching clusters */
- if (old_cluster != new_cluster) {
- pr_debug("%s: cpu: %d, old cluster: %d, new cluster: %d\n",
- __func__, cpu, old_cluster, new_cluster);
-
- /* Switch cluster */
- bL_switch_request(cpu, new_cluster);
-
- mutex_lock(&cluster_lock[old_cluster]);
-
- /* Set freq of old cluster if there are cpus left on it */
- new_rate = find_cluster_maxfreq(old_cluster);
- new_rate = ACTUAL_FREQ(old_cluster, new_rate);
-
- if (new_rate) {
- pr_debug("%s: Updating rate of old cluster: %d, to freq: %d\n",
- __func__, old_cluster, new_rate);
-
- if (clk_set_rate(clk[old_cluster], new_rate * 1000))
- pr_err("%s: clk_set_rate failed: %d, old cluster: %d\n",
- __func__, ret, old_cluster);
- }
- mutex_unlock(&cluster_lock[old_cluster]);
- }
-
- return 0;
-}
-
-/* Set clock frequency */
-static int bL_cpufreq_set_target(struct cpufreq_policy *policy,
- unsigned int index)
-{
- u32 cpu = policy->cpu, cur_cluster, new_cluster, actual_cluster;
- unsigned int freqs_new;
- int ret;
-
- cur_cluster = cpu_to_cluster(cpu);
- new_cluster = actual_cluster = per_cpu(physical_cluster, cpu);
-
- freqs_new = freq_table[cur_cluster][index].frequency;
-
- if (is_bL_switching_enabled()) {
- if ((actual_cluster == A15_CLUSTER) &&
- (freqs_new < clk_big_min)) {
- new_cluster = A7_CLUSTER;
- } else if ((actual_cluster == A7_CLUSTER) &&
- (freqs_new > clk_little_max)) {
- new_cluster = A15_CLUSTER;
- }
- }
-
- ret = bL_cpufreq_set_rate(cpu, actual_cluster, new_cluster, freqs_new);
-
- if (!ret) {
- arch_set_freq_scale(policy->related_cpus, freqs_new,
- policy->cpuinfo.max_freq);
- }
-
- return ret;
-}
-
-static inline u32 get_table_count(struct cpufreq_frequency_table *table)
-{
- int count;
-
- for (count = 0; table[count].frequency != CPUFREQ_TABLE_END; count++)
- ;
-
- return count;
-}
-
-/* get the minimum frequency in the cpufreq_frequency_table */
-static inline u32 get_table_min(struct cpufreq_frequency_table *table)
-{
- struct cpufreq_frequency_table *pos;
- uint32_t min_freq = ~0;
- cpufreq_for_each_entry(pos, table)
- if (pos->frequency < min_freq)
- min_freq = pos->frequency;
- return min_freq;
-}
-
-/* get the maximum frequency in the cpufreq_frequency_table */
-static inline u32 get_table_max(struct cpufreq_frequency_table *table)
-{
- struct cpufreq_frequency_table *pos;
- uint32_t max_freq = 0;
- cpufreq_for_each_entry(pos, table)
- if (pos->frequency > max_freq)
- max_freq = pos->frequency;
- return max_freq;
-}
-
-static int merge_cluster_tables(void)
-{
- int i, j, k = 0, count = 1;
- struct cpufreq_frequency_table *table;
-
- for (i = 0; i < MAX_CLUSTERS; i++)
- count += get_table_count(freq_table[i]);
-
- table = kcalloc(count, sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
-
- freq_table[MAX_CLUSTERS] = table;
-
- /* Add in reverse order to get freqs in increasing order */
- for (i = MAX_CLUSTERS - 1; i >= 0; i--) {
- for (j = 0; freq_table[i][j].frequency != CPUFREQ_TABLE_END;
- j++) {
- table[k].frequency = VIRT_FREQ(i,
- freq_table[i][j].frequency);
- pr_debug("%s: index: %d, freq: %d\n", __func__, k,
- table[k].frequency);
- k++;
- }
- }
-
- table[k].driver_data = k;
- table[k].frequency = CPUFREQ_TABLE_END;
-
- pr_debug("%s: End, table: %p, count: %d\n", __func__, table, k);
-
- return 0;
-}
-
-static void _put_cluster_clk_and_freq_table(struct device *cpu_dev,
- const struct cpumask *cpumask)
-{
- u32 cluster = raw_cpu_to_cluster(cpu_dev->id);
-
- if (!freq_table[cluster])
- return;
-
- clk_put(clk[cluster]);
- dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
- if (arm_bL_ops->free_opp_table)
- arm_bL_ops->free_opp_table(cpumask);
- dev_dbg(cpu_dev, "%s: cluster: %d\n", __func__, cluster);
-}
-
-static void put_cluster_clk_and_freq_table(struct device *cpu_dev,
- const struct cpumask *cpumask)
-{
- u32 cluster = cpu_to_cluster(cpu_dev->id);
- int i;
-
- if (atomic_dec_return(&cluster_usage[cluster]))
- return;
-
- if (cluster < MAX_CLUSTERS)
- return _put_cluster_clk_and_freq_table(cpu_dev, cpumask);
-
- for_each_present_cpu(i) {
- struct device *cdev = get_cpu_device(i);
- if (!cdev) {
- pr_err("%s: failed to get cpu%d device\n", __func__, i);
- return;
- }
-
- _put_cluster_clk_and_freq_table(cdev, cpumask);
- }
-
- /* free virtual table */
- kfree(freq_table[cluster]);
-}
-
-static int _get_cluster_clk_and_freq_table(struct device *cpu_dev,
- const struct cpumask *cpumask)
-{
- u32 cluster = raw_cpu_to_cluster(cpu_dev->id);
- int ret;
-
- if (freq_table[cluster])
- return 0;
-
- ret = arm_bL_ops->init_opp_table(cpumask);
- if (ret) {
- dev_err(cpu_dev, "%s: init_opp_table failed, cpu: %d, err: %d\n",
- __func__, cpu_dev->id, ret);
- goto out;
- }
-
- ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table[cluster]);
- if (ret) {
- dev_err(cpu_dev, "%s: failed to init cpufreq table, cpu: %d, err: %d\n",
- __func__, cpu_dev->id, ret);
- goto free_opp_table;
- }
-
- clk[cluster] = clk_get(cpu_dev, NULL);
- if (!IS_ERR(clk[cluster])) {
- dev_dbg(cpu_dev, "%s: clk: %p & freq table: %p, cluster: %d\n",
- __func__, clk[cluster], freq_table[cluster],
- cluster);
- return 0;
- }
-
- dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d, cluster: %d\n",
- __func__, cpu_dev->id, cluster);
- ret = PTR_ERR(clk[cluster]);
- dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
-
-free_opp_table:
- if (arm_bL_ops->free_opp_table)
- arm_bL_ops->free_opp_table(cpumask);
-out:
- dev_err(cpu_dev, "%s: Failed to get data for cluster: %d\n", __func__,
- cluster);
- return ret;
-}
-
-static int get_cluster_clk_and_freq_table(struct device *cpu_dev,
- const struct cpumask *cpumask)
-{
- u32 cluster = cpu_to_cluster(cpu_dev->id);
- int i, ret;
-
- if (atomic_inc_return(&cluster_usage[cluster]) != 1)
- return 0;
-
- if (cluster < MAX_CLUSTERS) {
- ret = _get_cluster_clk_and_freq_table(cpu_dev, cpumask);
- if (ret)
- atomic_dec(&cluster_usage[cluster]);
- return ret;
- }
-
- /*
- * Get data for all clusters and fill virtual cluster with a merge of
- * both
- */
- for_each_present_cpu(i) {
- struct device *cdev = get_cpu_device(i);
- if (!cdev) {
- pr_err("%s: failed to get cpu%d device\n", __func__, i);
- return -ENODEV;
- }
-
- ret = _get_cluster_clk_and_freq_table(cdev, cpumask);
- if (ret)
- goto put_clusters;
- }
-
- ret = merge_cluster_tables();
- if (ret)
- goto put_clusters;
-
- /* Assuming 2 cluster, set clk_big_min and clk_little_max */
- clk_big_min = get_table_min(freq_table[0]);
- clk_little_max = VIRT_FREQ(1, get_table_max(freq_table[1]));
-
- pr_debug("%s: cluster: %d, clk_big_min: %d, clk_little_max: %d\n",
- __func__, cluster, clk_big_min, clk_little_max);
-
- return 0;
-
-put_clusters:
- for_each_present_cpu(i) {
- struct device *cdev = get_cpu_device(i);
- if (!cdev) {
- pr_err("%s: failed to get cpu%d device\n", __func__, i);
- return -ENODEV;
- }
-
- _put_cluster_clk_and_freq_table(cdev, cpumask);
- }
-
- atomic_dec(&cluster_usage[cluster]);
-
- return ret;
-}
-
-/* Per-CPU initialization */
-static int bL_cpufreq_init(struct cpufreq_policy *policy)
-{
- u32 cur_cluster = cpu_to_cluster(policy->cpu);
- struct device *cpu_dev;
- int ret;
-
- cpu_dev = get_cpu_device(policy->cpu);
- if (!cpu_dev) {
- pr_err("%s: failed to get cpu%d device\n", __func__,
- policy->cpu);
- return -ENODEV;
- }
-
- if (cur_cluster < MAX_CLUSTERS) {
- int cpu;
-
- cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu));
-
- for_each_cpu(cpu, policy->cpus)
- per_cpu(physical_cluster, cpu) = cur_cluster;
- } else {
- /* Assumption: during init, we are always running on A15 */
- per_cpu(physical_cluster, policy->cpu) = A15_CLUSTER;
- }
-
- ret = get_cluster_clk_and_freq_table(cpu_dev, policy->cpus);
- if (ret)
- return ret;
-
- policy->freq_table = freq_table[cur_cluster];
- policy->cpuinfo.transition_latency =
- arm_bL_ops->get_transition_latency(cpu_dev);
-
- dev_pm_opp_of_register_em(policy->cpus);
-
- if (is_bL_switching_enabled())
- per_cpu(cpu_last_req_freq, policy->cpu) = clk_get_cpu_rate(policy->cpu);
-
- dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu);
- return 0;
-}
-
-static int bL_cpufreq_exit(struct cpufreq_policy *policy)
-{
- struct device *cpu_dev;
- int cur_cluster = cpu_to_cluster(policy->cpu);
-
- if (cur_cluster < MAX_CLUSTERS) {
- cpufreq_cooling_unregister(cdev[cur_cluster]);
- cdev[cur_cluster] = NULL;
- }
-
- cpu_dev = get_cpu_device(policy->cpu);
- if (!cpu_dev) {
- pr_err("%s: failed to get cpu%d device\n", __func__,
- policy->cpu);
- return -ENODEV;
- }
-
- put_cluster_clk_and_freq_table(cpu_dev, policy->related_cpus);
- dev_dbg(cpu_dev, "%s: Exited, cpu: %d\n", __func__, policy->cpu);
-
- return 0;
-}
-
-static void bL_cpufreq_ready(struct cpufreq_policy *policy)
-{
- int cur_cluster = cpu_to_cluster(policy->cpu);
-
- /* Do not register a cpu_cooling device if we are in IKS mode */
- if (cur_cluster >= MAX_CLUSTERS)
- return;
-
- cdev[cur_cluster] = of_cpufreq_cooling_register(policy);
-}
-
-static struct cpufreq_driver bL_cpufreq_driver = {
- .name = "arm-big-little",
- .flags = CPUFREQ_STICKY |
- CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
- CPUFREQ_NEED_INITIAL_FREQ_CHECK,
- .verify = cpufreq_generic_frequency_table_verify,
- .target_index = bL_cpufreq_set_target,
- .get = bL_cpufreq_get_rate,
- .init = bL_cpufreq_init,
- .exit = bL_cpufreq_exit,
- .ready = bL_cpufreq_ready,
- .attr = cpufreq_generic_attr,
-};
-
-#ifdef CONFIG_BL_SWITCHER
-static int bL_cpufreq_switcher_notifier(struct notifier_block *nfb,
- unsigned long action, void *_arg)
-{
- pr_debug("%s: action: %ld\n", __func__, action);
-
- switch (action) {
- case BL_NOTIFY_PRE_ENABLE:
- case BL_NOTIFY_PRE_DISABLE:
- cpufreq_unregister_driver(&bL_cpufreq_driver);
- break;
-
- case BL_NOTIFY_POST_ENABLE:
- set_switching_enabled(true);
- cpufreq_register_driver(&bL_cpufreq_driver);
- break;
-
- case BL_NOTIFY_POST_DISABLE:
- set_switching_enabled(false);
- cpufreq_register_driver(&bL_cpufreq_driver);
- break;
-
- default:
- return NOTIFY_DONE;
- }
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block bL_switcher_notifier = {
- .notifier_call = bL_cpufreq_switcher_notifier,
-};
-
-static int __bLs_register_notifier(void)
-{
- return bL_switcher_register_notifier(&bL_switcher_notifier);
-}
-
-static int __bLs_unregister_notifier(void)
-{
- return bL_switcher_unregister_notifier(&bL_switcher_notifier);
-}
-#else
-static int __bLs_register_notifier(void) { return 0; }
-static int __bLs_unregister_notifier(void) { return 0; }
-#endif
-
-int bL_cpufreq_register(const struct cpufreq_arm_bL_ops *ops)
-{
- int ret, i;
-
- if (arm_bL_ops) {
- pr_debug("%s: Already registered: %s, exiting\n", __func__,
- arm_bL_ops->name);
- return -EBUSY;
- }
-
- if (!ops || !strlen(ops->name) || !ops->init_opp_table ||
- !ops->get_transition_latency) {
- pr_err("%s: Invalid arm_bL_ops, exiting\n", __func__);
- return -ENODEV;
- }
-
- arm_bL_ops = ops;
-
- set_switching_enabled(bL_switcher_get_enabled());
-
- for (i = 0; i < MAX_CLUSTERS; i++)
- mutex_init(&cluster_lock[i]);
-
- ret = cpufreq_register_driver(&bL_cpufreq_driver);
- if (ret) {
- pr_info("%s: Failed registering platform driver: %s, err: %d\n",
- __func__, ops->name, ret);
- arm_bL_ops = NULL;
- } else {
- ret = __bLs_register_notifier();
- if (ret) {
- cpufreq_unregister_driver(&bL_cpufreq_driver);
- arm_bL_ops = NULL;
- } else {
- pr_info("%s: Registered platform driver: %s\n",
- __func__, ops->name);
- }
- }
-
- bL_switcher_put_enabled();
- return ret;
-}
-EXPORT_SYMBOL_GPL(bL_cpufreq_register);
-
-void bL_cpufreq_unregister(const struct cpufreq_arm_bL_ops *ops)
-{
- if (arm_bL_ops != ops) {
- pr_err("%s: Registered with: %s, can't unregister, exiting\n",
- __func__, arm_bL_ops->name);
- return;
- }
-
- bL_switcher_get_enabled();
- __bLs_unregister_notifier();
- cpufreq_unregister_driver(&bL_cpufreq_driver);
- bL_switcher_put_enabled();
- pr_info("%s: Un-registered platform driver: %s\n", __func__,
- arm_bL_ops->name);
- arm_bL_ops = NULL;
-}
-EXPORT_SYMBOL_GPL(bL_cpufreq_unregister);
-
-MODULE_AUTHOR("Viresh Kumar <viresh.kumar@linaro.org>");
-MODULE_DESCRIPTION("Generic ARM big LITTLE cpufreq driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/cpufreq/arm_big_little.h b/drivers/cpufreq/arm_big_little.h
deleted file mode 100644
index 88a176e466c8..000000000000
--- a/drivers/cpufreq/arm_big_little.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * ARM big.LITTLE platform's CPUFreq header file
- *
- * Copyright (C) 2013 ARM Ltd.
- * Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
- *
- * Copyright (C) 2013 Linaro.
- * Viresh Kumar <viresh.kumar@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-#ifndef CPUFREQ_ARM_BIG_LITTLE_H
-#define CPUFREQ_ARM_BIG_LITTLE_H
-
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/types.h>
-
-struct cpufreq_arm_bL_ops {
- char name[CPUFREQ_NAME_LEN];
-
- /*
- * This must set opp table for cpu_dev in a similar way as done by
- * dev_pm_opp_of_add_table().
- */
- int (*init_opp_table)(const struct cpumask *cpumask);
-
- /* Optional */
- int (*get_transition_latency)(struct device *cpu_dev);
- void (*free_opp_table)(const struct cpumask *cpumask);
-};
-
-int bL_cpufreq_register(const struct cpufreq_arm_bL_ops *ops);
-void bL_cpufreq_unregister(const struct cpufreq_arm_bL_ops *ops);
-
-#endif /* CPUFREQ_ARM_BIG_LITTLE_H */
diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index bca8d1f47fd2..54bc76743b1f 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -86,7 +86,6 @@ static const struct of_device_id whitelist[] __initconst = {
{ .compatible = "st-ericsson,u9540", },
{ .compatible = "ti,omap2", },
- { .compatible = "ti,omap3", },
{ .compatible = "ti,omap4", },
{ .compatible = "ti,omap5", },
@@ -137,6 +136,7 @@ static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "ti,am33xx", },
{ .compatible = "ti,am43", },
{ .compatible = "ti,dra7", },
+ { .compatible = "ti,omap3", },
{ }
};
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 48a224a6b178..7fc1a686f2f6 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -933,6 +933,9 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
struct freq_attr *fattr = to_attr(attr);
ssize_t ret;
+ if (!fattr->show)
+ return -EIO;
+
down_read(&policy->rwsem);
ret = fattr->show(policy, buf);
up_read(&policy->rwsem);
@@ -947,6 +950,9 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
struct freq_attr *fattr = to_attr(attr);
ssize_t ret = -EINVAL;
+ if (!fattr->store)
+ return -EIO;
+
/*
* cpus_read_trylock() is used here to work around a circular lock
* dependency problem with respect to the cpufreq_register_driver().
@@ -2385,7 +2391,10 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
- /* verify the cpu speed can be set within this limit */
+ /*
+ * Verify that the CPU speed can be set within these limits and make sure
+ * that min <= max.
+ */
ret = cpufreq_driver->verify(new_policy);
if (ret)
return ret;
@@ -2628,6 +2637,13 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
if (cpufreq_disabled())
return -ENODEV;
+ /*
+ * The cpufreq core depends heavily on the availability of device
+ * structure, make sure they are available before proceeding further.
+ */
+ if (!get_cpu_device(0))
+ return -EPROBE_DEFER;
+
if (!driver_data || !driver_data->verify || !driver_data->init ||
!(driver_data->setpolicy || driver_data->target_index ||
driver_data->target) ||
diff --git a/drivers/cpufreq/imx-cpufreq-dt.c b/drivers/cpufreq/imx-cpufreq-dt.c
index 35db14cf3102..85a6efd6b68f 100644
--- a/drivers/cpufreq/imx-cpufreq-dt.c
+++ b/drivers/cpufreq/imx-cpufreq-dt.c
@@ -44,19 +44,19 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
mkt_segment = (cell_value & OCOTP_CFG3_MKT_SEGMENT_MASK) >> OCOTP_CFG3_MKT_SEGMENT_SHIFT;
/*
- * Early samples without fuses written report "0 0" which means
- * consumer segment and minimum speed grading.
- *
- * According to datasheet minimum speed grading is not supported for
- * consumer parts so clamp to 1 to avoid warning for "no OPPs"
+ * Early samples without fuses written report "0 0" which may NOT
+ * match any OPP defined in DT. So clamp to minimum OPP defined in
+ * DT to avoid warning for "no OPPs".
*
* Applies to i.MX8M series SoCs.
*/
- if (mkt_segment == 0 && speed_grade == 0 && (
- of_machine_is_compatible("fsl,imx8mm") ||
- of_machine_is_compatible("fsl,imx8mn") ||
- of_machine_is_compatible("fsl,imx8mq")))
- speed_grade = 1;
+ if (mkt_segment == 0 && speed_grade == 0) {
+ if (of_machine_is_compatible("fsl,imx8mm") ||
+ of_machine_is_compatible("fsl,imx8mq"))
+ speed_grade = 1;
+ if (of_machine_is_compatible("fsl,imx8mn"))
+ speed_grade = 0xb;
+ }
supported_hw[0] = BIT(speed_grade);
supported_hw[1] = BIT(mkt_segment);
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 8ab31702cf6a..d2fa3e9ccd97 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2662,21 +2662,21 @@ enum {
/* Hardware vendor-specific info that has its own power management modes */
static struct acpi_platform_list plat_info[] __initdata = {
- {"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS},
- {"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
- {"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, NULL, PSS},
+ {"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
+ {"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{ } /* End */
};
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 6061850e59c9..56f4bc0d209e 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -1041,9 +1041,14 @@ static struct cpufreq_driver powernv_cpufreq_driver = {
static int init_chip_info(void)
{
- unsigned int chip[256];
+ unsigned int *chip;
unsigned int cpu, i;
unsigned int prev_chip_id = UINT_MAX;
+ int ret = 0;
+
+ chip = kcalloc(num_possible_cpus(), sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
for_each_possible_cpu(cpu) {
unsigned int id = cpu_to_chip_id(cpu);
@@ -1055,8 +1060,10 @@ static int init_chip_info(void)
}
chips = kcalloc(nr_chips, sizeof(struct chip), GFP_KERNEL);
- if (!chips)
- return -ENOMEM;
+ if (!chips) {
+ ret = -ENOMEM;
+ goto free_and_return;
+ }
for (i = 0; i < nr_chips; i++) {
chips[i].id = chip[i];
@@ -1066,7 +1073,9 @@ static int init_chip_info(void)
per_cpu(chip_info, cpu) = &chips[i];
}
- return 0;
+free_and_return:
+ kfree(chip);
+ return ret;
}
static inline void clean_chip_info(void)
diff --git a/drivers/cpufreq/s3c64xx-cpufreq.c b/drivers/cpufreq/s3c64xx-cpufreq.c
index af0c00dabb22..c6bdfc308e99 100644
--- a/drivers/cpufreq/s3c64xx-cpufreq.c
+++ b/drivers/cpufreq/s3c64xx-cpufreq.c
@@ -19,7 +19,6 @@
static struct regulator *vddarm;
static unsigned long regulator_latency;
-#ifdef CONFIG_CPU_S3C6410
struct s3c64xx_dvfs {
unsigned int vddarm_min;
unsigned int vddarm_max;
@@ -48,7 +47,6 @@ static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
{ 0, 4, 800000 },
{ 0, 0, CPUFREQ_TABLE_END },
};
-#endif
static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int index)
@@ -149,11 +147,6 @@ static int s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
if (policy->cpu != 0)
return -EINVAL;
- if (s3c64xx_freq_table == NULL) {
- pr_err("No frequency information for this CPU\n");
- return -ENODEV;
- }
-
policy->clk = clk_get(NULL, "armclk");
if (IS_ERR(policy->clk)) {
pr_err("Unable to obtain ARMCLK: %ld\n",
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index 2b51e0718c9f..20d1f85d5f5a 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -1,8 +1,6 @@
/*
* System Control and Power Interface (SCPI) based CPUFreq Interface driver
*
- * It provides necessary ops to arm_big_little cpufreq driver.
- *
* Copyright (C) 2015 ARM Ltd.
* Sudeep Holla <sudeep.holla@arm.com>
*
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index eca32e443716..9907a165135b 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -25,7 +25,7 @@
static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
/**
- * sun50i_cpufreq_get_efuse() - Parse and return efuse value present on SoC
+ * sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value
* @versions: Set to the value parsed from efuse
*
* Returns 0 if success.
@@ -69,21 +69,16 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
return PTR_ERR(speedbin);
efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
- switch (efuse_value) {
- case 0b0001:
- *versions = 1;
- break;
- case 0b0011:
- *versions = 2;
- break;
- default:
- /*
- * For other situations, we treat it as bin0.
- * This vf table can be run for any good cpu.
- */
+
+ /*
+ * We treat unexpected efuse values as if the SoC was from
+ * the slowest bin. Expected efuse values are 1-3, slowest
+ * to fastest.
+ */
+ if (efuse_value >= 1 && efuse_value <= 3)
+ *versions = efuse_value - 1;
+ else
*versions = 0;
- break;
- }
kfree(speedbin);
return 0;
diff --git a/drivers/cpufreq/ti-cpufreq.c b/drivers/cpufreq/ti-cpufreq.c
index aeaa883a8c9d..557cb513bf7f 100644
--- a/drivers/cpufreq/ti-cpufreq.c
+++ b/drivers/cpufreq/ti-cpufreq.c
@@ -31,11 +31,17 @@
#define DRA7_EFUSE_OD_MPU_OPP BIT(1)
#define DRA7_EFUSE_HIGH_MPU_OPP BIT(2)
+#define OMAP3_CONTROL_DEVICE_STATUS 0x4800244C
+#define OMAP3_CONTROL_IDCODE 0x4830A204
+#define OMAP34xx_ProdID_SKUID 0x4830A20C
+#define OMAP3_SYSCON_BASE (0x48000000 + 0x2000 + 0x270)
+
#define VERSION_COUNT 2
struct ti_cpufreq_data;
struct ti_cpufreq_soc_data {
+ const char * const *reg_names;
unsigned long (*efuse_xlate)(struct ti_cpufreq_data *opp_data,
unsigned long efuse);
unsigned long efuse_fallback;
@@ -85,6 +91,13 @@ static unsigned long dra7_efuse_xlate(struct ti_cpufreq_data *opp_data,
return calculated_efuse;
}
+static unsigned long omap3_efuse_xlate(struct ti_cpufreq_data *opp_data,
+ unsigned long efuse)
+{
+ /* OPP enable bit ("Speed Binned") */
+ return BIT(efuse);
+}
+
static struct ti_cpufreq_soc_data am3x_soc_data = {
.efuse_xlate = amx3_efuse_xlate,
.efuse_fallback = AM33XX_800M_ARM_MPU_MAX_FREQ,
@@ -112,6 +125,74 @@ static struct ti_cpufreq_soc_data dra7_soc_data = {
.multi_regulator = true,
};
+/*
+ * OMAP35x TRM (SPRUF98K):
+ * CONTROL_IDCODE (0x4830 A204) describes Silicon revisions.
+ * Control OMAP Status Register 15:0 (Address 0x4800 244C)
+ * to separate between omap3503, omap3515, omap3525, omap3530
+ * and feature presence.
+ * There are encodings for versions limited to 400/266MHz
+ * but we ignore.
+ * Not clear if this also holds for omap34xx.
+ * some eFuse values e.g. CONTROL_FUSE_OPP1_VDD1
+ * are stored in the SYSCON register range
+ * Register 0x4830A20C [ProdID.SKUID] [0:3]
+ * 0x0 for normal 600/430MHz device.
+ * 0x8 for 720/520MHz device.
+ * Not clear what omap34xx value is.
+ */
+
+static struct ti_cpufreq_soc_data omap34xx_soc_data = {
+ .efuse_xlate = omap3_efuse_xlate,
+ .efuse_offset = OMAP34xx_ProdID_SKUID - OMAP3_SYSCON_BASE,
+ .efuse_shift = 3,
+ .efuse_mask = BIT(3),
+ .rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
+ .multi_regulator = false,
+};
+
+/*
+ * AM/DM37x TRM (SPRUGN4M)
+ * CONTROL_IDCODE (0x4830 A204) describes Silicon revisions.
+ * Control Device Status Register 15:0 (Address 0x4800 244C)
+ * to separate between am3703, am3715, dm3725, dm3730
+ * and feature presence.
+ * Speed Binned = Bit 9
+ * 0 800/600 MHz
+ * 1 1000/800 MHz
+ * some eFuse values e.g. CONTROL_FUSE_OPP 1G_VDD1
+ * are stored in the SYSCON register range.
+ * There is no 0x4830A20C [ProdID.SKUID] register (exists but
+ * seems to always read as 0).
+ */
+
+static const char * const omap3_reg_names[] = {"cpu0", "vbb"};
+
+static struct ti_cpufreq_soc_data omap36xx_soc_data = {
+ .reg_names = omap3_reg_names,
+ .efuse_xlate = omap3_efuse_xlate,
+ .efuse_offset = OMAP3_CONTROL_DEVICE_STATUS - OMAP3_SYSCON_BASE,
+ .efuse_shift = 9,
+ .efuse_mask = BIT(9),
+ .rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
+ .multi_regulator = true,
+};
+
+/*
+ * AM3517 is quite similar to AM/DM37x except that it has no
+ * high speed grade eFuse and no abb ldo
+ */
+
+static struct ti_cpufreq_soc_data am3517_soc_data = {
+ .efuse_xlate = omap3_efuse_xlate,
+ .efuse_offset = OMAP3_CONTROL_DEVICE_STATUS - OMAP3_SYSCON_BASE,
+ .efuse_shift = 0,
+ .efuse_mask = 0,
+ .rev_offset = OMAP3_CONTROL_IDCODE - OMAP3_SYSCON_BASE,
+ .multi_regulator = false,
+};
+
+
/**
* ti_cpufreq_get_efuse() - Parse and return efuse value present on SoC
* @opp_data: pointer to ti_cpufreq_data context
@@ -128,7 +209,17 @@ static int ti_cpufreq_get_efuse(struct ti_cpufreq_data *opp_data,
ret = regmap_read(opp_data->syscon, opp_data->soc_data->efuse_offset,
&efuse);
- if (ret) {
+ if (ret == -EIO) {
+ /* not a syscon register! */
+ void __iomem *regs = ioremap(OMAP3_SYSCON_BASE +
+ opp_data->soc_data->efuse_offset, 4);
+
+ if (!regs)
+ return -ENOMEM;
+ efuse = readl(regs);
+ iounmap(regs);
+ }
+ else if (ret) {
dev_err(dev,
"Failed to read the efuse value from syscon: %d\n",
ret);
@@ -159,7 +250,17 @@ static int ti_cpufreq_get_rev(struct ti_cpufreq_data *opp_data,
ret = regmap_read(opp_data->syscon, opp_data->soc_data->rev_offset,
&revision);
- if (ret) {
+ if (ret == -EIO) {
+ /* not a syscon register! */
+ void __iomem *regs = ioremap(OMAP3_SYSCON_BASE +
+ opp_data->soc_data->rev_offset, 4);
+
+ if (!regs)
+ return -ENOMEM;
+ revision = readl(regs);
+ iounmap(regs);
+ }
+ else if (ret) {
dev_err(dev,
"Failed to read the revision number from syscon: %d\n",
ret);
@@ -189,8 +290,14 @@ static int ti_cpufreq_setup_syscon_register(struct ti_cpufreq_data *opp_data)
static const struct of_device_id ti_cpufreq_of_match[] = {
{ .compatible = "ti,am33xx", .data = &am3x_soc_data, },
+ { .compatible = "ti,am3517", .data = &am3517_soc_data, },
{ .compatible = "ti,am43", .data = &am4x_soc_data, },
{ .compatible = "ti,dra7", .data = &dra7_soc_data },
+ { .compatible = "ti,omap34xx", .data = &omap34xx_soc_data, },
+ { .compatible = "ti,omap36xx", .data = &omap36xx_soc_data, },
+ /* legacy */
+ { .compatible = "ti,omap3430", .data = &omap34xx_soc_data, },
+ { .compatible = "ti,omap3630", .data = &omap36xx_soc_data, },
{},
};
@@ -212,7 +319,7 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
const struct of_device_id *match;
struct opp_table *ti_opp_table;
struct ti_cpufreq_data *opp_data;
- const char * const reg_names[] = {"vdd", "vbb"};
+ const char * const default_reg_names[] = {"vdd", "vbb"};
int ret;
match = dev_get_platdata(&pdev->dev);
@@ -268,9 +375,13 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
opp_data->opp_table = ti_opp_table;
if (opp_data->soc_data->multi_regulator) {
+ const char * const *reg_names = default_reg_names;
+
+ if (opp_data->soc_data->reg_names)
+ reg_names = opp_data->soc_data->reg_names;
ti_opp_table = dev_pm_opp_set_regulators(opp_data->cpu_dev,
reg_names,
- ARRAY_SIZE(reg_names));
+ ARRAY_SIZE(default_reg_names));
if (IS_ERR(ti_opp_table)) {
dev_pm_opp_put_supported_hw(opp_data->opp_table);
ret = PTR_ERR(ti_opp_table);
diff --git a/drivers/cpufreq/vexpress-spc-cpufreq.c b/drivers/cpufreq/vexpress-spc-cpufreq.c
index 53237289e606..506e3f2bf53a 100644
--- a/drivers/cpufreq/vexpress-spc-cpufreq.c
+++ b/drivers/cpufreq/vexpress-spc-cpufreq.c
@@ -1,61 +1,592 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Versatile Express SPC CPUFreq Interface driver
*
- * It provides necessary ops to arm_big_little cpufreq driver.
+ * Copyright (C) 2013 - 2019 ARM Ltd.
+ * Sudeep Holla <sudeep.holla@arm.com>
*
- * Copyright (C) 2013 ARM Ltd.
- * Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (C) 2013 Linaro.
+ * Viresh Kumar <viresh.kumar@linaro.org>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/clk.h>
#include <linux/cpu.h>
#include <linux/cpufreq.h>
+#include <linux/cpumask.h>
+#include <linux/cpu_cooling.h>
+#include <linux/device.h>
#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
+#include <linux/slab.h>
+#include <linux/topology.h>
#include <linux/types.h>
-#include "arm_big_little.h"
+/* Currently we support only two clusters */
+#define A15_CLUSTER 0
+#define A7_CLUSTER 1
+#define MAX_CLUSTERS 2
+
+#ifdef CONFIG_BL_SWITCHER
+#include <asm/bL_switcher.h>
+static bool bL_switching_enabled;
+#define is_bL_switching_enabled() bL_switching_enabled
+#define set_switching_enabled(x) (bL_switching_enabled = (x))
+#else
+#define is_bL_switching_enabled() false
+#define set_switching_enabled(x) do { } while (0)
+#define bL_switch_request(...) do { } while (0)
+#define bL_switcher_put_enabled() do { } while (0)
+#define bL_switcher_get_enabled() do { } while (0)
+#endif
+
+#define ACTUAL_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq << 1 : freq)
+#define VIRT_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq >> 1 : freq)
+
+static struct thermal_cooling_device *cdev[MAX_CLUSTERS];
+static struct clk *clk[MAX_CLUSTERS];
+static struct cpufreq_frequency_table *freq_table[MAX_CLUSTERS + 1];
+static atomic_t cluster_usage[MAX_CLUSTERS + 1];
+
+static unsigned int clk_big_min; /* (Big) clock frequencies */
+static unsigned int clk_little_max; /* Maximum clock frequency (Little) */
+
+static DEFINE_PER_CPU(unsigned int, physical_cluster);
+static DEFINE_PER_CPU(unsigned int, cpu_last_req_freq);
+
+static struct mutex cluster_lock[MAX_CLUSTERS];
+
+static inline int raw_cpu_to_cluster(int cpu)
+{
+ return topology_physical_package_id(cpu);
+}
+
+static inline int cpu_to_cluster(int cpu)
+{
+ return is_bL_switching_enabled() ?
+ MAX_CLUSTERS : raw_cpu_to_cluster(cpu);
+}
+
+static unsigned int find_cluster_maxfreq(int cluster)
+{
+ int j;
+ u32 max_freq = 0, cpu_freq;
+
+ for_each_online_cpu(j) {
+ cpu_freq = per_cpu(cpu_last_req_freq, j);
+
+ if (cluster == per_cpu(physical_cluster, j) &&
+ max_freq < cpu_freq)
+ max_freq = cpu_freq;
+ }
+
+ return max_freq;
+}
+
+static unsigned int clk_get_cpu_rate(unsigned int cpu)
+{
+ u32 cur_cluster = per_cpu(physical_cluster, cpu);
+ u32 rate = clk_get_rate(clk[cur_cluster]) / 1000;
+
+ /* For switcher we use virtual A7 clock rates */
+ if (is_bL_switching_enabled())
+ rate = VIRT_FREQ(cur_cluster, rate);
+
+ return rate;
+}
+
+static unsigned int ve_spc_cpufreq_get_rate(unsigned int cpu)
+{
+ if (is_bL_switching_enabled())
+ return per_cpu(cpu_last_req_freq, cpu);
+ else
+ return clk_get_cpu_rate(cpu);
+}
+
+static unsigned int
+ve_spc_cpufreq_set_rate(u32 cpu, u32 old_cluster, u32 new_cluster, u32 rate)
+{
+ u32 new_rate, prev_rate;
+ int ret;
+ bool bLs = is_bL_switching_enabled();
+
+ mutex_lock(&cluster_lock[new_cluster]);
+
+ if (bLs) {
+ prev_rate = per_cpu(cpu_last_req_freq, cpu);
+ per_cpu(cpu_last_req_freq, cpu) = rate;
+ per_cpu(physical_cluster, cpu) = new_cluster;
+
+ new_rate = find_cluster_maxfreq(new_cluster);
+ new_rate = ACTUAL_FREQ(new_cluster, new_rate);
+ } else {
+ new_rate = rate;
+ }
+
+ ret = clk_set_rate(clk[new_cluster], new_rate * 1000);
+ if (!ret) {
+ /*
+ * FIXME: clk_set_rate hasn't returned an error here however it
+ * may be that clk_change_rate failed due to hardware or
+ * firmware issues and wasn't able to report that due to the
+ * current design of the clk core layer. To work around this
+ * problem we will read back the clock rate and check it is
+ * correct. This needs to be removed once clk core is fixed.
+ */
+ if (clk_get_rate(clk[new_cluster]) != new_rate * 1000)
+ ret = -EIO;
+ }
+
+ if (WARN_ON(ret)) {
+ if (bLs) {
+ per_cpu(cpu_last_req_freq, cpu) = prev_rate;
+ per_cpu(physical_cluster, cpu) = old_cluster;
+ }
+
+ mutex_unlock(&cluster_lock[new_cluster]);
+
+ return ret;
+ }
+
+ mutex_unlock(&cluster_lock[new_cluster]);
+
+ /* Recalc freq for old cluster when switching clusters */
+ if (old_cluster != new_cluster) {
+ /* Switch cluster */
+ bL_switch_request(cpu, new_cluster);
+
+ mutex_lock(&cluster_lock[old_cluster]);
+
+ /* Set freq of old cluster if there are cpus left on it */
+ new_rate = find_cluster_maxfreq(old_cluster);
+ new_rate = ACTUAL_FREQ(old_cluster, new_rate);
+
+ if (new_rate &&
+ clk_set_rate(clk[old_cluster], new_rate * 1000)) {
+ pr_err("%s: clk_set_rate failed: %d, old cluster: %d\n",
+ __func__, ret, old_cluster);
+ }
+ mutex_unlock(&cluster_lock[old_cluster]);
+ }
+
+ return 0;
+}
+
+/* Set clock frequency */
+static int ve_spc_cpufreq_set_target(struct cpufreq_policy *policy,
+ unsigned int index)
+{
+ u32 cpu = policy->cpu, cur_cluster, new_cluster, actual_cluster;
+ unsigned int freqs_new;
+ int ret;
+
+ cur_cluster = cpu_to_cluster(cpu);
+ new_cluster = actual_cluster = per_cpu(physical_cluster, cpu);
+
+ freqs_new = freq_table[cur_cluster][index].frequency;
+
+ if (is_bL_switching_enabled()) {
+ if (actual_cluster == A15_CLUSTER && freqs_new < clk_big_min)
+ new_cluster = A7_CLUSTER;
+ else if (actual_cluster == A7_CLUSTER &&
+ freqs_new > clk_little_max)
+ new_cluster = A15_CLUSTER;
+ }
+
+ ret = ve_spc_cpufreq_set_rate(cpu, actual_cluster, new_cluster,
+ freqs_new);
+
+ if (!ret) {
+ arch_set_freq_scale(policy->related_cpus, freqs_new,
+ policy->cpuinfo.max_freq);
+ }
+
+ return ret;
+}
+
+static inline u32 get_table_count(struct cpufreq_frequency_table *table)
+{
+ int count;
+
+ for (count = 0; table[count].frequency != CPUFREQ_TABLE_END; count++)
+ ;
+
+ return count;
+}
+
+/* get the minimum frequency in the cpufreq_frequency_table */
+static inline u32 get_table_min(struct cpufreq_frequency_table *table)
+{
+ struct cpufreq_frequency_table *pos;
+ u32 min_freq = ~0;
+
+ cpufreq_for_each_entry(pos, table)
+ if (pos->frequency < min_freq)
+ min_freq = pos->frequency;
+ return min_freq;
+}
+
+/* get the maximum frequency in the cpufreq_frequency_table */
+static inline u32 get_table_max(struct cpufreq_frequency_table *table)
+{
+ struct cpufreq_frequency_table *pos;
+ u32 max_freq = 0;
+
+ cpufreq_for_each_entry(pos, table)
+ if (pos->frequency > max_freq)
+ max_freq = pos->frequency;
+ return max_freq;
+}
+
+static bool search_frequency(struct cpufreq_frequency_table *table, int size,
+ unsigned int freq)
+{
+ int count;
+
+ for (count = 0; count < size; count++) {
+ if (table[count].frequency == freq)
+ return true;
+ }
+
+ return false;
+}
+
+static int merge_cluster_tables(void)
+{
+ int i, j, k = 0, count = 1;
+ struct cpufreq_frequency_table *table;
+
+ for (i = 0; i < MAX_CLUSTERS; i++)
+ count += get_table_count(freq_table[i]);
+
+ table = kcalloc(count, sizeof(*table), GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ freq_table[MAX_CLUSTERS] = table;
+
+ /* Add in reverse order to get freqs in increasing order */
+ for (i = MAX_CLUSTERS - 1; i >= 0; i--, count = k) {
+ for (j = 0; freq_table[i][j].frequency != CPUFREQ_TABLE_END;
+ j++) {
+ if (i == A15_CLUSTER &&
+ search_frequency(table, count, freq_table[i][j].frequency))
+ continue; /* skip duplicates */
+ table[k++].frequency =
+ VIRT_FREQ(i, freq_table[i][j].frequency);
+ }
+ }
+
+ table[k].driver_data = k;
+ table[k].frequency = CPUFREQ_TABLE_END;
+
+ return 0;
+}
-static int ve_spc_init_opp_table(const struct cpumask *cpumask)
+static void _put_cluster_clk_and_freq_table(struct device *cpu_dev,
+ const struct cpumask *cpumask)
{
- struct device *cpu_dev = get_cpu_device(cpumask_first(cpumask));
+ u32 cluster = raw_cpu_to_cluster(cpu_dev->id);
+
+ if (!freq_table[cluster])
+ return;
+
+ clk_put(clk[cluster]);
+ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
+}
+
+static void put_cluster_clk_and_freq_table(struct device *cpu_dev,
+ const struct cpumask *cpumask)
+{
+ u32 cluster = cpu_to_cluster(cpu_dev->id);
+ int i;
+
+ if (atomic_dec_return(&cluster_usage[cluster]))
+ return;
+
+ if (cluster < MAX_CLUSTERS)
+ return _put_cluster_clk_and_freq_table(cpu_dev, cpumask);
+
+ for_each_present_cpu(i) {
+ struct device *cdev = get_cpu_device(i);
+
+ if (!cdev)
+ return;
+
+ _put_cluster_clk_and_freq_table(cdev, cpumask);
+ }
+
+ /* free virtual table */
+ kfree(freq_table[cluster]);
+}
+
+static int _get_cluster_clk_and_freq_table(struct device *cpu_dev,
+ const struct cpumask *cpumask)
+{
+ u32 cluster = raw_cpu_to_cluster(cpu_dev->id);
+ int ret;
+
+ if (freq_table[cluster])
+ return 0;
+
/*
* platform specific SPC code must initialise the opp table
* so just check if the OPP count is non-zero
*/
- return dev_pm_opp_get_opp_count(cpu_dev) <= 0;
+ ret = dev_pm_opp_get_opp_count(cpu_dev) <= 0;
+ if (ret)
+ goto out;
+
+ ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table[cluster]);
+ if (ret)
+ goto out;
+
+ clk[cluster] = clk_get(cpu_dev, NULL);
+ if (!IS_ERR(clk[cluster]))
+ return 0;
+
+ dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d, cluster: %d\n",
+ __func__, cpu_dev->id, cluster);
+ ret = PTR_ERR(clk[cluster]);
+ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table[cluster]);
+
+out:
+ dev_err(cpu_dev, "%s: Failed to get data for cluster: %d\n", __func__,
+ cluster);
+ return ret;
}
-static int ve_spc_get_transition_latency(struct device *cpu_dev)
+static int get_cluster_clk_and_freq_table(struct device *cpu_dev,
+ const struct cpumask *cpumask)
{
- return 1000000; /* 1 ms */
+ u32 cluster = cpu_to_cluster(cpu_dev->id);
+ int i, ret;
+
+ if (atomic_inc_return(&cluster_usage[cluster]) != 1)
+ return 0;
+
+ if (cluster < MAX_CLUSTERS) {
+ ret = _get_cluster_clk_and_freq_table(cpu_dev, cpumask);
+ if (ret)
+ atomic_dec(&cluster_usage[cluster]);
+ return ret;
+ }
+
+ /*
+ * Get data for all clusters and fill virtual cluster with a merge of
+ * both
+ */
+ for_each_present_cpu(i) {
+ struct device *cdev = get_cpu_device(i);
+
+ if (!cdev)
+ return -ENODEV;
+
+ ret = _get_cluster_clk_and_freq_table(cdev, cpumask);
+ if (ret)
+ goto put_clusters;
+ }
+
+ ret = merge_cluster_tables();
+ if (ret)
+ goto put_clusters;
+
+ /* Assuming 2 cluster, set clk_big_min and clk_little_max */
+ clk_big_min = get_table_min(freq_table[A15_CLUSTER]);
+ clk_little_max = VIRT_FREQ(A7_CLUSTER,
+ get_table_max(freq_table[A7_CLUSTER]));
+
+ return 0;
+
+put_clusters:
+ for_each_present_cpu(i) {
+ struct device *cdev = get_cpu_device(i);
+
+ if (!cdev)
+ return -ENODEV;
+
+ _put_cluster_clk_and_freq_table(cdev, cpumask);
+ }
+
+ atomic_dec(&cluster_usage[cluster]);
+
+ return ret;
}
-static const struct cpufreq_arm_bL_ops ve_spc_cpufreq_ops = {
- .name = "vexpress-spc",
- .get_transition_latency = ve_spc_get_transition_latency,
- .init_opp_table = ve_spc_init_opp_table,
+/* Per-CPU initialization */
+static int ve_spc_cpufreq_init(struct cpufreq_policy *policy)
+{
+ u32 cur_cluster = cpu_to_cluster(policy->cpu);
+ struct device *cpu_dev;
+ int ret;
+
+ cpu_dev = get_cpu_device(policy->cpu);
+ if (!cpu_dev) {
+ pr_err("%s: failed to get cpu%d device\n", __func__,
+ policy->cpu);
+ return -ENODEV;
+ }
+
+ if (cur_cluster < MAX_CLUSTERS) {
+ int cpu;
+
+ cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu));
+
+ for_each_cpu(cpu, policy->cpus)
+ per_cpu(physical_cluster, cpu) = cur_cluster;
+ } else {
+ /* Assumption: during init, we are always running on A15 */
+ per_cpu(physical_cluster, policy->cpu) = A15_CLUSTER;
+ }
+
+ ret = get_cluster_clk_and_freq_table(cpu_dev, policy->cpus);
+ if (ret)
+ return ret;
+
+ policy->freq_table = freq_table[cur_cluster];
+ policy->cpuinfo.transition_latency = 1000000; /* 1 ms */
+
+ dev_pm_opp_of_register_em(policy->cpus);
+
+ if (is_bL_switching_enabled())
+ per_cpu(cpu_last_req_freq, policy->cpu) =
+ clk_get_cpu_rate(policy->cpu);
+
+ dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu);
+ return 0;
+}
+
+static int ve_spc_cpufreq_exit(struct cpufreq_policy *policy)
+{
+ struct device *cpu_dev;
+ int cur_cluster = cpu_to_cluster(policy->cpu);
+
+ if (cur_cluster < MAX_CLUSTERS) {
+ cpufreq_cooling_unregister(cdev[cur_cluster]);
+ cdev[cur_cluster] = NULL;
+ }
+
+ cpu_dev = get_cpu_device(policy->cpu);
+ if (!cpu_dev) {
+ pr_err("%s: failed to get cpu%d device\n", __func__,
+ policy->cpu);
+ return -ENODEV;
+ }
+
+ put_cluster_clk_and_freq_table(cpu_dev, policy->related_cpus);
+ return 0;
+}
+
+static void ve_spc_cpufreq_ready(struct cpufreq_policy *policy)
+{
+ int cur_cluster = cpu_to_cluster(policy->cpu);
+
+ /* Do not register a cpu_cooling device if we are in IKS mode */
+ if (cur_cluster >= MAX_CLUSTERS)
+ return;
+
+ cdev[cur_cluster] = of_cpufreq_cooling_register(policy);
+}
+
+static struct cpufreq_driver ve_spc_cpufreq_driver = {
+ .name = "vexpress-spc",
+ .flags = CPUFREQ_STICKY |
+ CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
+ CPUFREQ_NEED_INITIAL_FREQ_CHECK,
+ .verify = cpufreq_generic_frequency_table_verify,
+ .target_index = ve_spc_cpufreq_set_target,
+ .get = ve_spc_cpufreq_get_rate,
+ .init = ve_spc_cpufreq_init,
+ .exit = ve_spc_cpufreq_exit,
+ .ready = ve_spc_cpufreq_ready,
+ .attr = cpufreq_generic_attr,
};
+#ifdef CONFIG_BL_SWITCHER
+static int bL_cpufreq_switcher_notifier(struct notifier_block *nfb,
+ unsigned long action, void *_arg)
+{
+ pr_debug("%s: action: %ld\n", __func__, action);
+
+ switch (action) {
+ case BL_NOTIFY_PRE_ENABLE:
+ case BL_NOTIFY_PRE_DISABLE:
+ cpufreq_unregister_driver(&ve_spc_cpufreq_driver);
+ break;
+
+ case BL_NOTIFY_POST_ENABLE:
+ set_switching_enabled(true);
+ cpufreq_register_driver(&ve_spc_cpufreq_driver);
+ break;
+
+ case BL_NOTIFY_POST_DISABLE:
+ set_switching_enabled(false);
+ cpufreq_register_driver(&ve_spc_cpufreq_driver);
+ break;
+
+ default:
+ return NOTIFY_DONE;
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block bL_switcher_notifier = {
+ .notifier_call = bL_cpufreq_switcher_notifier,
+};
+
+static int __bLs_register_notifier(void)
+{
+ return bL_switcher_register_notifier(&bL_switcher_notifier);
+}
+
+static int __bLs_unregister_notifier(void)
+{
+ return bL_switcher_unregister_notifier(&bL_switcher_notifier);
+}
+#else
+static int __bLs_register_notifier(void) { return 0; }
+static int __bLs_unregister_notifier(void) { return 0; }
+#endif
+
static int ve_spc_cpufreq_probe(struct platform_device *pdev)
{
- return bL_cpufreq_register(&ve_spc_cpufreq_ops);
+ int ret, i;
+
+ set_switching_enabled(bL_switcher_get_enabled());
+
+ for (i = 0; i < MAX_CLUSTERS; i++)
+ mutex_init(&cluster_lock[i]);
+
+ ret = cpufreq_register_driver(&ve_spc_cpufreq_driver);
+ if (ret) {
+ pr_info("%s: Failed registering platform driver: %s, err: %d\n",
+ __func__, ve_spc_cpufreq_driver.name, ret);
+ } else {
+ ret = __bLs_register_notifier();
+ if (ret)
+ cpufreq_unregister_driver(&ve_spc_cpufreq_driver);
+ else
+ pr_info("%s: Registered platform driver: %s\n",
+ __func__, ve_spc_cpufreq_driver.name);
+ }
+
+ bL_switcher_put_enabled();
+ return ret;
}
static int ve_spc_cpufreq_remove(struct platform_device *pdev)
{
- bL_cpufreq_unregister(&ve_spc_cpufreq_ops);
+ bL_switcher_get_enabled();
+ __bLs_unregister_notifier();
+ cpufreq_unregister_driver(&ve_spc_cpufreq_driver);
+ bL_switcher_put_enabled();
+ pr_info("%s: Un-registered platform driver: %s\n", __func__,
+ ve_spc_cpufreq_driver.name);
return 0;
}
@@ -68,4 +599,7 @@ static struct platform_driver ve_spc_cpufreq_platdrv = {
};
module_platform_driver(ve_spc_cpufreq_platdrv);
-MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Viresh Kumar <viresh.kumar@linaro.org>");
+MODULE_AUTHOR("Sudeep Holla <sudeep.holla@arm.com>");
+MODULE_DESCRIPTION("Vexpress SPC ARM big LITTLE cpufreq driver");
+MODULE_LICENSE("GPL v2");