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The BeagleBone Black has P8 and P9 headers [0] which expose many of the
AM3358 ZCZ SoC balls to stacking expansion boards called "capes", or to
other external connections like jumper wires connected to a breadboard.
BeagleBone users will often refer to the "Cape Exanpsion Headers" pin
diagram [1] as it is in the "Bone101" getting started tutorial. [2]
Most of the P8 and P9 header pins can muxed to a GPIO line. The
gpio-line-names describe which P8 or P9 pin that line goes to and the
default mux for that P8 or P9 pin if it is not GPIO.
For example, gpiochip 1 line 0 is connected to P8 header pin 25 (P8_25)
however the default device tree has the corresponding BGA ball (ZCZ U7)
muxed to mmc1_dat0 as it is used for the on-board eMMC chip. For that
GPIO line to be used, one would need to modify the device tree to
disable the eMMC and change the pin mux for that ball to GPIO mode.
Some of the AM3358 ZCZ balls corresponding to GPIO lines are not routed
to a P8 or P9 header, but are instead wired to some peripheral device
like on-board eMMC, HDMI framer IC, or status LEDs. Those names are in
brackets to denote those GPIO lines can not be used.
Some GPIO lines are named "[NC]" as the corresponding balls are not
routed to anything on the PCB.
The goal for these names is to make it easier for a user viewing the
output of gpioinfo to determine which P8 or P9 pin is connected to a
GPIO line. The output of gpioinfo on a BeagleBone Black would be:
gpiochip0 - 32 lines:
line 0: "[ethernet]" unused input active-high
line 1: "[ethernet]" unused input active-high
line 2: "P9_22 [spi0_sclk]" unused input active-high
line 3: "P9_21 [spi0_d0]" unused input active-high
line 4: "P9_18 [spi0_d1]" unused input active-high
line 5: "P9_17 [spi0_cs0]" unused input active-high
line 6: "[sd card]" "cd" input active-low [used]
line 7: "P9_42A [ecappwm0]" unused input active-high
line 8: "P8_35 [hdmi]" unused input active-high
line 9: "P8_33 [hdmi]" unused input active-high
line 10: "P8_31 [hdmi]" unused input active-high
line 11: "P8_32 [hdmi]" unused input active-high
line 12: "P9_20 [i2c2_sda]" unused input active-high
line 13: "P9_19 [i2c2_scl]" unused input active-high
line 14: "P9_26 [uart1_rxd]" unused input active-high
line 15: "P9_24 [uart1_txd]" unused input active-high
line 16: "[ethernet]" unused input active-high
line 17: "[ethernet]" unused input active-high
line 18: "[usb]" unused input active-high
line 19: "[hdmi]" unused input active-high
line 20: "P9_41B" unused input active-high
line 21: "[ethernet]" unused input active-high
line 22: "P8_19 [ehrpwm2a]" unused input active-high
line 23: "P8_13 [ehrpwm2b]" unused input active-high
line 24: "[NC]" unused input active-high
line 25: "[NC]" unused input active-high
line 26: "P8_14" unused input active-high
line 27: "P8_17" unused input active-high
line 28: "[ethernet]" unused input active-high
line 29: "[ethernet]" unused input active-high
line 30: "P9_11 [uart4_rxd]" unused input active-high
line 31: "P9_13 [uart4_txd]" unused input active-high
gpiochip1 - 32 lines:
line 0: "P8_25 [emmc]" unused input active-high
line 1: "[emmc]" unused input active-high
line 2: "P8_5 [emmc]" unused input active-high
line 3: "P8_6 [emmc]" unused input active-high
line 4: "P8_23 [emmc]" unused input active-high
line 5: "P8_22 [emmc]" unused input active-high
line 6: "P8_3 [emmc]" unused input active-high
line 7: "P8_4 [emmc]" unused input active-high
line 8: "[NC]" unused input active-high
line 9: "[NC]" unused input active-high
line 10: "[NC]" unused input active-high
line 11: "[NC]" unused input active-high
line 12: "P8_12" unused input active-high
line 13: "P8_11" unused input active-high
line 14: "P8_16" unused input active-high
line 15: "P8_15" unused input active-high
line 16: "P9_15A" unused input active-high
line 17: "P9_23" unused input active-high
line 18: "P9_14 [ehrpwm1a]" unused input active-high
line 19: "P9_16 [ehrpwm1b]" unused input active-high
line 20: "[emmc]" unused input active-high
line 21: "[usr0 led]" "beaglebone:green:heartbeat" output active-high [used]
line 22: "[usr1 led]" "beaglebone:green:mmc0" output active-high [used]
line 23: "[usr2 led]" "beaglebone:green:usr2" output active-high [used]
line 24: "[usr3 led]" "beaglebone:green:usr3" output active-high [used]
line 25: "[hdmi]" "interrupt" input active-high [used]
line 26: "[usb]" unused input active-high
line 27: "[hdmi audio]" "enable" output active-high [used]
line 28: "P9_12" unused input active-high
line 29: "P8_26" unused input active-high
line 30: "P8_21 [emmc]" unused input active-high
line 31: "P8_20 [emmc]" unused input active-high
gpiochip2 - 32 lines:
line 0: "P9_15B" unused input active-high
line 1: "P8_18" unused input active-high
line 2: "P8_7" unused input active-high
line 3: "P8_8" unused input active-high
line 4: "P8_10" unused input active-high
line 5: "P8_9" unused input active-high
line 6: "P8_45 [hdmi]" unused input active-high
line 7: "P8_46 [hdmi]" unused input active-high
line 8: "P8_43 [hdmi]" unused input active-high
line 9: "P8_44 [hdmi]" unused input active-high
line 10: "P8_41 [hdmi]" unused input active-high
line 11: "P8_42 [hdmi]" unused input active-high
line 12: "P8_39 [hdmi]" unused input active-high
line 13: "P8_40 [hdmi]" unused input active-high
line 14: "P8_37 [hdmi]" unused input active-high
line 15: "P8_38 [hdmi]" unused input active-high
line 16: "P8_36 [hdmi]" unused input active-high
line 17: "P8_34 [hdmi]" unused input active-high
line 18: "[ethernet]" unused input active-high
line 19: "[ethernet]" unused input active-high
line 20: "[ethernet]" unused input active-high
line 21: "[ethernet]" unused input active-high
line 22: "P8_27 [hdmi]" unused input active-high
line 23: "P8_29 [hdmi]" unused input active-high
line 24: "P8_28 [hdmi]" unused input active-high
line 25: "P8_30 [hdmi]" unused input active-high
line 26: "[emmc]" unused input active-high
line 27: "[emmc]" unused input active-high
line 28: "[emmc]" unused input active-high
line 29: "[emmc]" unused input active-high
line 30: "[emmc]" unused input active-high
line 31: "[emmc]" unused input active-high
gpiochip3 - 32 lines:
line 0: "[ethernet]" unused input active-high
line 1: "[ethernet]" unused input active-high
line 2: "[ethernet]" unused input active-high
line 3: "[ethernet]" unused input active-high
line 4: "[ethernet]" unused input active-high
line 5: "[i2c0]" unused input active-high
line 6: "[i2c0]" unused input active-high
line 7: "[emu]" unused input active-high
line 8: "[emu]" unused input active-high
line 9: "[ethernet]" unused input active-high
line 10: "[ethernet]" unused input active-high
line 11: "[NC]" unused input active-high
line 12: "[NC]" unused input active-high
line 13: "[usb]" unused input active-high
line 14: "P9_31 [spi1_sclk]" unused input active-high
line 15: "P9_29 [spi1_d0]" unused input active-high
line 16: "P9_30 [spi1_d1]" unused input active-high
line 17: "P9_28 [spi1_cs0]" unused input active-high
line 18: "P9_42B [ecappwm0]" unused input active-high
line 19: "P9_27" unused input active-high
line 20: "P9_41A" unused input active-high
line 21: "P9_25" unused input active-high
line 22: "[NC]" unused input active-high
line 23: "[NC]" unused input active-high
line 24: "[NC]" unused input active-high
line 25: "[NC]" unused input active-high
line 26: "[NC]" unused input active-high
line 27: "[NC]" unused input active-high
line 28: "[NC]" unused input active-high
line 29: "[NC]" unused input active-high
line 30: "[NC]" unused input active-high
line 31: "[NC]" unused input active-high
[0] https://git.io/JfgOd
[1] https://beagleboard.org/capes
[1] https://beagleboard.org/Support/bone101
[2] https://beagleboard.org/static/images/cape-headers.png
Reviewed-by: Jason Kridner <jason@beagleboard.org>
Reviewed-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Add gpio-ranges properties to the gpio controller nodes.
These gpio-ranges were created based on "Table 9-10. CONTROL_MODULE
REGISTERS" in the "AM335x Technical Reference Manual" [0] and "Table
4-2. Pin Attributes" in the "AM335x Sitara Processor datasheet" [1].
A csv file with this data is available for reference [2].
These mappings are valid for all SoC's that are using am33xx-l4.dtsi.
In addition, the only TI AM33xx parts that actually exist are [0]:
AM3351, AM3352, AM3354, AM3356, AM3357, AM3358, AM3359
These gpio-ranges properties should be added as they describe the
relationship between a gpio line and pin control register that exists
in the hardware. For example, GPMC_A0 pin has mode 7 which is labeled
gpio1_16. conf_gpmc_a0 register is at offset 840h which makes it pin 16.
[0] https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf
[1] http://www.ti.com/lit/ds/symlink/am3358.pdf
[2] https://gist.github.com/pdp7/6ffaddc8867973c1c3e8612cfaf72020
[3] http://www.ti.com/processors/sitara-arm/am335x-cortex-a8/overview.html
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The IPU and DSP remote processors use sub-mailbox nodes only from a
limited set of System Mailboxes 5 and 6 to achieve the Remote Processor
Messaging (RPMsg) communication stack between the MPU host processor
and the respective remote processor. These are all defined and enabled
through the inherited common dra74-ipu-dsp-common.dtsi file.
The other System Mailboxes do not define any actual sub-mailboxes, so
they serve no purpose and can all be safely dropped.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Assign the previously added CMA reserved memory nodes to the respective
IPU and DSP rproc device nodes, and enable these rproc nodes so that
these remote processors can be booted on the AM5729 BeagleBone AI board.
The addresses and sizes of the CMA pools are identical to those used on
various other TI AM572x/AM574x based boards. The mailboxes, timers and
watchdog-timers for all these remoteprocs are inherited by including the
common dra72-ipu-dsp-common.dtsi file.
An associated pair of the rproc node and its CMA node can be disabled
later on if there is no use-case defined to use that remote processor.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Fix dtschema validator warnings like:
l2-cache-controller@48242000: $nodename:0: 'l2-cache-controller@48242000'
does not match '^(cache-controller|cpu)(@[0-9a-f,]+)*$'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Fix dtschema validator warnings like:
l2-cache-controller@48242000: $nodename:0:
'l2-cache-controller@48242000' does not match '^(cache-controller|cpu)(@[0-9a-f,]+)*$'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The SafeSetID LSM uses the security_task_fix_setuid hook to filter
set*uid() syscalls according to its configured security policy. In
preparation for adding analagous support in the LSM for set*gid()
syscalls, we add the requisite hook here. Tested by putting print
statements in the security_task_fix_setgid hook and seeing them get hit
during kernel boot.
Signed-off-by: Thomas Cedeno <thomascedeno@google.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>
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This reverts commit a43a67a2d715540c1368b9501a22b0373b5874c0.
This patch reverts the main part of switching direct io implementation
to iomap infrastructure. There's a problem in invalidate page that
couldn't be solved as regression in this development cycle.
The problem occurs when buffered and direct io are mixed, and the ranges
overlap. Although this is not recommended, filesystems implement
measures or fallbacks to make it somehow work. In this case, fallback to
buffered IO would be an option for btrfs (this already happens when
direct io is done on compressed data), but the change would be needed in
the iomap code, bringing new semantics to other filesystems.
Another problem arises when again the buffered and direct ios are mixed,
invalidation fails, then -EIO is set on the mapping and fsync will fail,
though there's no real error.
There have been discussions how to fix that, but revert seems to be the
least intrusive option.
Link: https://lore.kernel.org/linux-btrfs/20200528192103.xm45qoxqmkw7i5yl@fiona/
Signed-off-by: David Sterba <dsterba@suse.com>
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On AM65xx MCU CPSW2G NUSS and 66AK2E/L NUSS allmulti setting does not allow
unregistered mcast packets to pass.
This happens, because ALE VLAN entries on these SoCs do not contain port
masks for reg/unreg mcast packets, but instead store indexes of
ALE_VLAN_MASK_MUXx_REG registers which intended for store port masks for
reg/unreg mcast packets.
This path was missed by commit 9d1f6447274f ("net: ethernet: ti: ale: fix
seeing unreg mcast packets with promisc and allmulti disabled").
Hence, fix it by taking into account ALE type in cpsw_ale_set_allmulti().
Fixes: 9d1f6447274f ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ALE parameters structure is created on stack, so it has to be reset
before passing to cpsw_ale_create() to avoid garbage values.
Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Looking into the context (atomic!) and the error message should be dropped.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Drew Fustini
Suman Anna
Krzysztof Kozlowski
Linus Torvalds
Thomas Cedeno
David Sterba
Grygorii Strashko
Liao Pingfang