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




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    Boris Brezillon, Free Electrons
    Embedded Linux and Kernel engineering
    http://free-electrons.com
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