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gpio para for kernel 4.x

Kimberly
in Advanced users - Development

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Hello,

 

I'm building a device driver which controls gpio pins.

 

When I developed one in the kernel 3.x, I could get the proper gpio pin number from script.fex(converted from script.bin in /boot/bin/ folder) For example, if the pin I'm using is PB03, I was able to use 3 to control that pin in device driver program.

 

gpio_pin_1 = port:PH10<1><default><default><0>
gpio_pin_2 = port:PH20<1><default><default><0>
gpio_pin_3 = port:PB03<0><default><default><default>

 

However, from kernel 4.x, script.bin file is not used anymore. Instead of this, there is a dtb file, but I have no idea where I can get the relevant number of a certain pin....

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