Linux/AM5728: GPIO numbers in AM5728

Aju s

Part Number: AM5728

Tool/software: Linux

Hi,

I am using CL_SOM_AM57x board which contain AM5728,Now i would like to toggle an led in different pins by command in linux (export , direction and value ). From the datasheet i found the gpios are named like gpio1_5 etc,but in Linux command can use only "gpio2 ..etc". How to find out the gpio number and toggle it with commands.

Aju S

over 7 years ago

0 Yordan Kovachev over 7 years ago

TI__Guru**** 161600 points

Hi,
See this thread:
e2e.ti.com/.../654053

Best Regards,
Yordan

0 Aju s over 7 years ago in reply to Yordan Kovachev

Expert 1220 points

i saw the thread it doesn't have much information.
I calculated the gpio with an equation.(GPIO0_5, would be GPIO 5 as (0 x32 + 5 = 5)) but it doesn't work or i can't control the pin.Why i can't access the pins?How to access device tree?

0 Yordan Kovachev over 7 years ago in reply to Aju s

TI__Guru**** 161600 points

The device tree is located in the following directory in the SDK sources:
arch/arm/boot/dts

GPIO0_5 should be the 6th pin I believe.

Best Regards,
Yordan

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Linux/AM5728: GPIO numbers in AM5728