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    SubjectRe: [PATCH v2 3/5] mmc: dw_mmc: Add exynos resume_noirq callback to clear WAKEUP_INT
    From
    Seungwon,

    On Wed, Jul 31, 2013 at 9:18 AM, Doug Anderson <dianders@chromium.org> wrote:
    > Seungwon,
    >
    > On Mon, Jul 15, 2013 at 5:09 AM, Seungwon Jeon <tgih.jun@samsung.com> wrote:
    >> Sorry for late response.
    >> Yes, it's not clear.
    >> If you get the confirmation, could you share this problem?
    >> Possibly, auto-clear may not be implemented.
    >> Then, manual should be correct.
    >
    > I just got an update from my contacts. They confirm that bit 11 is
    > not automatically cleared and that writing to it will clear it.
    > Hopefully this information will make it into the next version of any
    > documentation that you receive as well.
    >
    > It is still unclear exactly why the WAKEUP_INT was being asserted on
    > our board despite the fact that all of the wakeup control signals
    > (bits 10:8) were 0. That is still being investigated.

    I have further confirmed from my contacts at Samsung that this is a
    real silicon errata and that clearing the WAKEUP_INT as I am doing in
    this series is the right workaround.

    New patch coming shortly based against ToT linux
    (v3.11-rc4-20-g0fff106). I have confirmed that it applies cleanly to
    mmc-next, though I haven't tried booting with that tree.


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