Set a default ZYNQ MIO/GPIO value in the Device Tree
This is very frustrating. I am using the standard linux gpio access for Zynq and have an issue where I need a specific IO to come up as a logic 1. The implicit default is a zero - which is bad for me. It must be a 1.
The Xilinx Wiki device tree documentation doesn't explain how to modify this to do what I want and I am getting the feeling that I can't do what I want but I hope I can. I don't want to change my GPIO model to gpio-leds or gpio-keys but if I reaaly have to, I suppose I will.
I am hoping that these entries might help me
gpio-mask-high = <0x0>; gpio-mask-low = <0x5600>;
but I can't find anything that explains what their function is.