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kernelgpiodrivers

How to set a gpio pin to high and make it visible in /sys/class/gpio?

I am very new to kernel programming, and I want to set a GPIO pin in active high state when the board boots up. Where can I do this in the kernel?

I could do this after the board boots by exporting that pin into /sys/class/gpio, but I want this to be exported already with active HIGH state.

The reason I need it to be started by kernel is that I need to power on a LED while it is booting.

The board I'm using is PC Engines Alix3d2 with AMD CS5535 Geode processor.

Solution

  • Well I did this with the example given here