Change gpio on dts for orin nx jp6.2

[sjz_shaohua]

Hi,
Now, I want to add a GPIO node to the dts file and controlling the output high, but it’s faild.
My operation is as follows:
1、Revised tegra234-p3768-0000+p3767-0000.dts

2、When I executed “cat /sys/kernel/debug/gpio” in the Orin NX device, I received the following information：

  But,When I measured the voltages of GPIO01, GPIO02 and GPIO12 pins, the measured values remained at the low level.

  If I want to correctly add the gpio node in the file "tegra234-p3768-0000+p3767-0000.dts", what should I do?
  Thanks !!

[KevinFFF]

Hi sjz_shaohua,

Have you configured the pinmux for these 3 pins as output either using pinmux spreadsheet or pinmux@2430000 in kernel device tree before controlling them?

[sjz_shaohua]

Hi KevinFFF
I have revised the pinmux table according to your suggestions. Here is my modification. After the modification, there is still no voltage output for GPIO1 and GPIO2. I hope to get your help.
Thanks.

[KevinFFF]

Please share the gpio dtsi and the result of the following commands for further check.

//PQ.05 - SOC_GPIO32
$ sudo busybox devmem 0x02430068

//PP.06 - SOC_GPIO25
$ sudo busybox devmem 0x02430030

And also, check if you can pull them high with the following commands.

# gpioset --mode=wait `gpiofind "PQ.05"`=1
# gpioset --mode=wait `gpiofind "PP.06"`=1

[sjz_shaohua]

Hi KevinFFF
Thanks for your help,the problem has been solved.
“3.3V Tolerance Enable” need to be configured as “Disabled”.
Thanks.