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    Subject[PATCH v5 14/36] drm/bridge: analogix_dp: Extend hpd check time to 100ms
    Date
    From: Lin Huang <hl@rock-chips.com>

    There was a 1ms delay to detect the hpd signal, which is too short to
    detect a short pulse. This patch extends this delay to 100ms.

    Cc: Stéphane Marchesin <marcheu@chromium.org>
    Cc: 征增 王 <wzz@rock-chips.com>
    Signed-off-by: Lin Huang <hl@rock-chips.com>
    Signed-off-by: Sean Paul <seanpaul@chromium.org>
    Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
    Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
    Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
    Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
    ---

    drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
    index 3a222e7e46ee..6cbde8473f58 100644
    --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
    +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
    @@ -76,7 +76,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
    return 0;

    timeout_loop++;
    - usleep_range(10, 11);
    + usleep_range(1000, 1100);
    }

    /*
    --
    2.16.1
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