[PATCH v3 12/14] drm: bridge/analogix_dp: expand the delay time for hpd detect
From: Yakir Yang <hidden>
Date: 2015-08-19 14:52:44
Also in:
dri-devel, linux-devicetree, linux-rockchip, linux-samsung-soc, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Linus Torvalds
Some edp screen with no hpd signal would need some delay time to ensure that screen would be ready for work, so we can expand the delay time in hpd detect function, it works prefectly on my rk3288 sdk board. Signed-off-by: Yakir Yang <redacted> --- Changes in v3: None Changes in v2: None drivers/gpu/drm/bridge/analogix_dp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix_dp_core.c
index 99870f7..75dd44a 100644
--- a/drivers/gpu/drm/bridge/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix_dp_core.c@@ -68,7 +68,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp) return 0; timeout_loop++; - usleep_range(10, 11); + usleep_range(100, 110); } /*
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1.9.1