TDA4VM: WKUP_GPIO0 could't be initialized successfully on PSDK7.0 because of the conflict between sysfw and dts.

Hi Nathan,

Yes this is a bug. You can use the below information to address the issue.

I have attached the patched (same as in https://e2e.ti.com/support/processors/f/791/t/924900) and the built sysfw.itb.patched from my setup. Rename the sysfw.itb.patched to sysfw.itb and copy to the BOOT/ and then boot the board.

You can build the same by applying the 2 patched. I see the git repo for the k3-image-gen-2020.04a is corrupted in the SDK7.0. Run the following:

# Applying patches

cd <SDK_INSTALL_PATH>/board-support/k3-image-gen-2020.04a

rm –rf .git

git init

git add .

git commit –sm “SDK baselined commit”

git am <PATH_TO_ATTACHED_PATCHED>/*

git log                                      <- you should see 2 patches as attached

 

#building sysfw.itb

cd <SDK_INSTALL_PATH>

make sysfw-image

You will then be able to find the sysfs entry for wkuo_gpio0 as highlighted in the below logs. Now when you have the GPIO chip you can follow the https://e2e.ti.com/support/processors/f/791/t/918654 on how to toggle it from user space.

Regards,

Karan

LOGS:

-------

root@j7-evm:~# find /proc/device-tree/__symbols__/ | grep gpio

/proc/device-tree/__symbols__/main_gpio_intr

/proc/device-tree/__symbols__/main_gpio7

/proc/device-tree/__symbols__/main_gpio5

/proc/device-tree/__symbols__/wkup_gpio0

/proc/device-tree/__symbols__/main_gpio3

/proc/device-tree/__symbols__/main_gpio1

/proc/device-tree/__symbols__/gpio_keys

/proc/device-tree/__symbols__/wkup_gpio_intr

/proc/device-tree/__symbols__/main_gpio6

/proc/device-tree/__symbols__/wkup_gpio1

/proc/device-tree/__symbols__/main_gpio4

/proc/device-tree/__symbols__/main_gpio2

/proc/device-tree/__symbols__/main_gpio0

root@j7-evm:~#

root@j7-evm:~# cat /proc/device-tree/__symbols__/wkup_gpio0

/interconnect@100000/interconnect@28380000/gpio@42110000

root@j7-evm:~#

root@j7-evm:~# ls -la /sys/class/gpio/

total 0

drwxr-xr-x    2 root     root             0 Jun 17 14:17 .

drwxr-xr-x   62 root     root             0 Jun 17 14:17 ..

--w-------    1 root     root         65536 Jun 17 14:17 export

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip216 -> ../../devices/platform/interconnect@100000/601000.gpio/gpio/gpiochip216

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip252 -> ../../devices/platform/interconnect@100000/600000.gpio/gpio/gpiochip252

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip380 -> ../../devices/platform/interconnect@100000/interconnect@100000:interconnect@28380000/42110000.gpio/gpio/gpiochip380

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip464 -> ../../devices/platform/interconnect@100000/2030000.i2c/i2c-5/5-0020/gpio/gpiochip464

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip472 -> ../../devices/platform/interconnect@100000/2000000.i2c/i2c-3/3-0022/gpio/gpiochip472

lrwxrwxrwx    1 root     root             0 Jun 17 14:17 gpiochip496 -> ../../devices/platform/interconnect@100000/2000000.i2c/i2c-3/3-0020/gpio/gpiochip496

--w-------    1 root     root         65536 Jun 17 14:17 unexport

Patches: /cfs-file/__key/communityserver-discussions-components-files/791/3583.patches.zip

Built sysfw.itb from my setup: /cfs-file/__key/communityserver-discussions-components-files/791/sysfw.itb.patched.zip