Problem locating/removing code relating to the device tree pin_hog pins

spearson — Fri, 26 Apr 2013 00:05:12 GMT

Problem: I am unable to reassign MX28_PAD_SSP1_DATA3__GPIO_2_15 for use on custom hardware.

I am using the Linux mainline kernel (3.8.4) and have a custom board that is similar to the imx28evk. I have setup my own board configuration and have do not have the pin_hog code in my device tree but I am still unable to gpio_request() the pin.

I am assuming that this is still being assigned as the FEC0 Power Enable but I cannot find where Linux is grabbing control of the pin.

Any help with this specific pin and, in general, how to locate and remove code associated with pin_hog pins would be appreciated.

Re: Problem locating/removing code relating to the device tree pin_hog pins

spearson — Fri, 26 Apr 2013 01:57:25 GMT

Found it.

myfile.dts

regulators{

...

reg_fec_3v3: fec-3v3 {

...

gpio = <&gpio2 15 0>

...

topic Re: Problem locating/removing code relating to the device tree pin_hog pins in i.MX Processors

Problem locating/removing code relating to the device tree pin_hog pins

Re: Problem locating/removing code relating to the device tree pin_hog pins