I've got a custom board akin to the walnut. I've successfully got u-boot,
the kernel, and a working filesystem. The only thing I lack is a clear idea
of how to set a GPIO.
I have the PHY reset connected to GPIO 3. I've got it setup in u-boot
correctly, but by the time linux boots, it has touched the GPIOs and now the
PHY is held in reset. I tried to follow how to adjust my device tree,
but I
haven't been able to get it to work yet. My kernel (circa mid 2008)
doesn't
have the "keep" property of the GPIO node, so I can't use that.
Based on what I've read it seems that I might need to add a node to the dts
and then a custom piece of code in the platform directory for my board. I
am just not sure how to proceed there.
thanks
ayman
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