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| author |   Tony Lindgren <tony@atomide.com> | 2019-10-23 11:39:42 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2019-10-30 08:14:03 -0700 |
| commit | 308607e5545f964ad3917919201ce4d9491f7fdb (patch) | |
| tree | 6fd04ebb3e24110a0e083ac474c7560f39ba95ba | |
| parent | Linux 5.4-rc1 (diff) | |
| download | linux-dev-308607e5545f964ad3917919201ce4d9491f7fdb.tar.xz linux-dev-308607e5545f964ad3917919201ce4d9491f7fdb.zip | |
ARM: dts: Configure omap3 rng
Looks like omap3 RNG is similar to the omap2 rng, let's get it working
by configring the dts node for it.
We must also add rng_ick to core_l4_clkdm as noted by Adam Ford.
And please note that the RNG is likely disabled on HS devices. At least
n900 does not have it accessible, and instead omap3-rom-rng driver must
be used. So let's tag RNG as disabled on n900 as noted by Pali Rohár
<pali.rohar@gmail.com>.
On am3517 at least the clocks need to be configured to get it working
as noted by Adam Ford, so let's tag it disabled for now.
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Adam Ford <aford173@gmail.com>
Cc: Pali Rohár <pali.rohar@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Tero Kristo <t-kristo@ti.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/boot/dts/am3517.dtsi | 6 | ||||
| -rw-r--r-- | arch/arm/boot/dts/omap3-n900.dts | 5 | ||||
| -rw-r--r-- | arch/arm/boot/dts/omap3.dtsi | 25 | ||||
| -rw-r--r-- | arch/arm/boot/dts/omap34xx-omap36xx-clocks.dtsi | 2 |
4 files changed, 37 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/am3517.dtsi b/arch/arm/boot/dts/am3517.dtsi index bf3002009b00..baadf7e2f8f4 100644 --- a/arch/arm/boot/dts/am3517.dtsi +++ b/arch/arm/boot/dts/am3517.dtsi @@ -115,6 +115,12 @@ }; }; +/* Not currently working, probably needs at least different clocks */ +&rng_target { + status = "disabled"; + /delete-property/ clocks; +}; + /* Table Table 5-79 of the TRM shows 480ab000 is reserved */ &usb_otg_hs { status = "disabled"; diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 84a5ade1e865..e1286510fdf8 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -1013,6 +1013,11 @@ }; }; +/* RNG not directly accessible on n900, see omap3-rom-rng instead */ +&rng_target { + status = "disabled"; +}; + &usb_otg_hs { interface-type = <0>; usb-phy = <&usb2_phy>; diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index 4043ecb38016..5698a3e241aa 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -8,6 +8,7 @@ * kind, whether express or implied. */ +#include <dt-bindings/bus/ti-sysc.h> #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/interrupt-controller/irq.h> #include <dt-bindings/pinctrl/omap.h> @@ -502,6 +503,30 @@ status = "disabled"; }; + /* Likely needs to be tagged disabled on HS devices */ + rng_target: target-module@480a0000 { + compatible = "ti,sysc-omap2", "ti,sysc"; + reg = <0x480a003c 0x4>, + <0x480a0040 0x4>, + <0x480a0044 0x4>; + reg-names = "rev", "sysc", "syss"; + ti,sysc-mask = <(SYSC_OMAP2_AUTOIDLE)>; + ti,sysc-sidle = <SYSC_IDLE_FORCE>, + <SYSC_IDLE_NO>; + ti,syss-mask = <1>; + clocks = <&rng_ick>; + clock-names = "ick"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x480a0000 0x2000>; + + rng: rng@0 { + compatible = "ti,omap2-rng"; + reg = <0x0 0x2000>; + interrupts = <52>; + }; + }; + mcbsp2: mcbsp@49022000 { compatible = "ti,omap3-mcbsp"; reg = <0x49022000 0xff>, diff --git a/arch/arm/boot/dts/omap34xx-omap36xx-clocks.dtsi b/arch/arm/boot/dts/omap34xx-omap36xx-clocks.dtsi index 5e9d1afcd422..21079cdf2663 100644 --- a/arch/arm/boot/dts/omap34xx-omap36xx-clocks.dtsi +++ b/arch/arm/boot/dts/omap34xx-omap36xx-clocks.dtsi @@ -260,6 +260,6 @@ <&gpt10_ick>, <&mcbsp5_ick>, <&mcbsp1_ick>, <&omapctrl_ick>, <&aes2_ick>, <&sha12_ick>, <&icr_ick>, <&des2_ick>, <&mspro_ick>, <&mailboxes_ick>, - <&mspro_fck>; + <&rng_ick>, <&mspro_fck>; }; }; |