On Feb 10, 2015 3:25 PM, <[email protected]> wrote:
>
> I have a custom application where I am setting GPIO controlling a relay
to low at the uboot stage (because the pin reset values are high. I know
this is a bad pin selection but bear with me).
> I have this GPIO configured as an output in the DeviceTree and when Linux
takes its turn to start, it reinitializes the GPIO, clicking the relay on
and off.
>
> How would I notify Linux to not reinitialize the GPIO and prevent the
extra relay toggle?

There is a patchset called gpio hog that might hit v3.20-rc0 to solve this
from the kernel side.

Regards,

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