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Groups > linux.kernel > #1201810

[RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect

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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 <ykk@rock-chips.com>
---
 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 7e67f19..447c94d 100644
--- a/drivers/gpu/drm/bridge/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix_dp_core.c
@@ -73,7 +73,7 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 			return 0;
 
 		timeout_loop++;
-		usleep_range(10, 11);
+		usleep_range(100, 110);
 	}
 
 	/*
-- 
2.1.2


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Thread

[RFC PATCH 0/8] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:00 +0200
  [RFC PATCH 1/8] drm: exynos/dp: fix code style Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:00 +0200
  [RFC PATCH 1/8] drm: exynos/dp: fix code style Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:10 +0200
    Re: [RFC PATCH 1/8] drm: exynos/dp: fix code style Joe Perches <joe@perches.com> - 2015-08-06 17:10 +0200
      Re: [RFC PATCH 1/8] drm: exynos/dp: fix code style Yakir Yang <ykk@rock-chips.com> - 2015-08-06 17:30 +0200
  [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:10 +0200
    Re: [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode "Jingoo Han" <jingoohan1@gmail.com> - 2015-08-06 16:30 +0200
      Re: [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:30 +0200
        Re: [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode Daniel Vetter <daniel@ffwll.ch> - 2015-08-07 13:30 +0200
          Re: [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode Yakir Yang <ykk@rock-chips.com> - 2015-08-07 15:20 +0200
  [RFC PATCH 6/8] drm: bridge: analogix_dp: add some rk3288 special registers setting Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:30 +0200
  [RFC PATCH 7/8] drm: bridge: analogix_dp: try force hpd after plug in lookup failed Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:30 +0200
  [RFC PATCH 4/8] drm: rockchip/dp: add rockchip platform dp driver Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:30 +0200
  [RFC PATCH 5/8] drm: bridge/analogix_dp: add platform device type support Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:30 +0200
  [RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:40 +0200
  Re: [RFC PATCH 3/8] drm: bridge: analogix_dp: split exynos dp driver to bridge dir "Jingoo Han" <jingoohan1@gmail.com> - 2015-08-06 16:40 +0200
    Re: [RFC PATCH 3/8] drm: bridge: analogix_dp: split exynos dp driver  to bridge dir Yakir Yang <ykk@rock-chips.com> - 2015-08-06 17:00 +0200
  [RFC PATCH 3/8] drm: bridge: analogix_dp: split exynos dp driver to bridge dir Yakir Yang <ykk@rock-chips.com> - 2015-08-06 16:40 +0200
  Re: [RFC PATCH 0/8] Add Analogix Core Display Port Driver "Jingoo Han" <jingoohan1@gmail.com> - 2015-08-06 16:50 +0200
    Re: [RFC PATCH 0/8] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-06 17:10 +0200

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