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drm/bridge: analogix_dp: Fix timeout of video streamclk config

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The STRM_VALID bit in register ANALOGIX_DP_SYS_CTL_3 may be unstable,
so we may hit the error log "Timeout of video streamclk ok" since
checked this unstable bit.
In fact, we can go continue and the streamclk is ok if we wait enough time,
it does no effect on display.
Let's change this error to warn.

Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: zain wang <wzz@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>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-16-enric.balletbo@collabora.com
This commit is contained in:
zain wang 2018-04-23 12:49:51 +02:00 committed by Andrzej Hajda
parent ac0c0b611d
commit c4d3b1a21e
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
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@ -921,8 +921,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
done_count = 0;
}
if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
dev_err(dp->dev, "Timeout of video streamclk ok\n");
return -ETIMEDOUT;
dev_warn(dp->dev,
"Ignoring timeout of video streamclk ok\n");
break;
}
usleep_range(1000, 1001);