Can't switch GPIO01/PQ.05/105/453/pin-29 to input using /sys/class/gpio

[theosib]

We’re using the Nvidia devkit board.

That busybox command returns 0xffffffff. Please my other post on this:

Trying to configure GPIO pin direction, "busybox devmem" returns 0xffffffff for all addresses

Hi, I’m trying to configure pin 29 on the 40-pin header as an input with a pullup. Evidently, there’s no API support, so we have to use busybox to manually write values to configuration registers. The pin I want to use is 29 on the connector. This has internal names such as GPIO01 and PQ.05. When accessing it through the kernel API, this is gpio-453. And when I access it using ioctls in my code, it’s pin 105. In the pinmux spreadsheet, it’s also referred to as EXTPERIPH3_CLK and GPIO3_PQ.05, a…