Re: [PATCH] ARM: at91: at91sam9x5: sets NPCS0 (PA14) back to GPIO

Boris BREZILLON
2014-07-25T08:46:00Z

On Fri, 25 Jul 2014 10:27:13 +0200
Jiří Prchal <jiri.prchal@aksignal.cz> wrote:

[...]
>
>
> > Could you also paste the content of /sys/kernel/debug/gpio ?
> The /sys/kernel/debug/ is empty.

You have to enable CONFIG_DEBUG_FS in your config and then mount the
debug file system:

#mount -t debugfs dbg /sys/kernel/debug

--
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering