Uefi can get gpio status error

[wpceswpces]

we want to get the gpio status in uefi for boot order change ,according the other topic ,i can see the MAIN GPIO controller status(phandle = 0xe3 ,but not AON GPIO controller status（phandle=0xf6）.when i print after ControllerIndex is =12 GpioIndex=0! @@@ gpio=E30060 ,uefi can not boot up normally.

[KevinFFF]

Hi wpceswpces,

Are you using the devkit or custom board for AGX Orin?
What’s your Jetpack version in use?

@wpceswpces

we want to get the gpio status in uefi for boot order change

Could you elaborate your use case?

Please also share the full device tree for further check.

[wpceswpces]

Hi,KevinFFF,we are use our custom board for test . Jetpack version is 6.0（r36.3),and we want to select the boot device by the gpio ,Here is my device tree,another question i want to know is why the pin number in the document is continuous，but what i print is discontinuous.

[wpceswpces]

i try the GpioUtil.efi in uefi shell ,it beak as well . here is the log

shell.txt (18.4 KB)

when display e30060 /e30088/e30089,it broken.

i have try some gpio and find the pin which i want but it’s id not as i think before.

[KevinFFF]

The GPIO ID is a 4 Bytes number out of which higher 2 bytes are phandle of gpio controller and lower 2 bytes are gpio number for that controller.
It should be as the following macro, and you could refer to tegra234-gpio.h for port.

#define GPIO(Port, Pin)  ((EMBEDDED_GPIO_PIN)(((Port) << (16)) | (Pin)))

[wpceswpces]

这个头文件可以对上 ，port *8+offset，感谢。