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From: Yakir Yang <ykk@rock-chips.com>
To: Heiko Stuebner <heiko@sntech.de>,
	Russell King <rmk+kernel@arm.linux.org.uk>,
	Fabio Estevam <fabio.estevam@freescale.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Inki Dae <inki.dae@samsung.com>
Cc: djkurtz@google.com, dianders@google.com,
	Takashi Iwai <tiwai@suse.de>, Andrzej Hajda <a.hajda@samsung.com>,
	Yakir Yang <ykk@rock-chips.com>,
	Thierry Reding <treding@nvidia.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	David Airlie <airlied@linux.ie>,
	Gustavo Padovan <gustavo.padovan@collabora.co.uk>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Krzysztof Kozlowski <k.kozlowski@samsung.com>,
	Kukjin Kim <kgene@kernel.org>,
	Ajay Kumar <ajaykumar.rs@samsung.com>,
	Joonyoung Shim <jy0922.shim@samsung.com>,
	Vincent Palatin <vpalatin@chromium.org>,
	Mark Yao <mark.yao@rock-chips.com>,
	Andy Yan <andy.yan@rock-chips.com>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org,
	linux-rockchip@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect
Date: Thu,  6 Aug 2015 09:26:33 -0500	[thread overview]
Message-ID: <1438871193-24067-1-git-send-email-ykk@rock-chips.com> (raw)
In-Reply-To: <1438868947-22132-1-git-send-email-ykk@rock-chips.com>

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



WARNING: multiple messages have this Message-ID (diff)
From: Yakir Yang <ykk@rock-chips.com>
To: Heiko Stuebner <heiko@sntech.de>,
	Russell King <rmk+kernel@arm.linux.org.uk>,
	Fabio Estevam <fabio.estevam@freescale.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Inki Dae <inki.dae@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>,
	dri-devel@lists.freedesktop.org,
	Andrzej Hajda <a.hajda@samsung.com>,
	Yakir Yang <ykk@rock-chips.com>,
	Gustavo Padovan <gustavo.padovan@collabora.co.uk>,
	Ajay Kumar <ajaykumar.rs@samsung.com>,
	linux-samsung-soc@vger.kernel.org,
	Vincent Palatin <vpalatin@chromium.org>,
	linux-rockchip@lists.infradead.org, Kukjin Kim <kgene@kernel.org>,
	Thierry Reding <treding@nvidia.com>,
	dianders@google.com, linux-arm-kernel@lists.infradead.org,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	linux-kernel@vger.kernel.org,
	Kyungmin Park <kyungmin.park@samsung.com>,
	djkurtz@google.com, Andy Yan <andy.yan@rock-chips.com>
Subject: [RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect
Date: Thu,  6 Aug 2015 09:26:33 -0500	[thread overview]
Message-ID: <1438871193-24067-1-git-send-email-ykk@rock-chips.com> (raw)
In-Reply-To: <1438868947-22132-1-git-send-email-ykk@rock-chips.com>

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


_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: ykk@rock-chips.com (Yakir Yang)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect
Date: Thu,  6 Aug 2015 09:26:33 -0500	[thread overview]
Message-ID: <1438871193-24067-1-git-send-email-ykk@rock-chips.com> (raw)
In-Reply-To: <1438868947-22132-1-git-send-email-ykk@rock-chips.com>

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

  parent reply	other threads:[~2015-08-06 14:32 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-06 13:49 [RFC PATCH 0/8] Add Analogix Core Display Port Driver Yakir Yang
2015-08-06 13:49 ` Yakir Yang
2015-08-06 13:58 ` [RFC PATCH 1/8] drm: exynos/dp: fix code style Yakir Yang
2015-08-06 13:58   ` Yakir Yang
2015-08-06 14:04 ` Yakir Yang
2015-08-06 14:04   ` Yakir Yang
2015-08-06 15:05   ` Joe Perches
2015-08-06 15:05     ` Joe Perches
2015-08-06 15:05     ` Joe Perches
2015-08-06 15:20     ` Yakir Yang
2015-08-06 15:20       ` Yakir Yang
2015-08-06 15:20       ` Yakir Yang
2015-08-06 14:07 ` [RFC PATCH 2/8] drm: exynos/dp: convert to drm bridge mode Yakir Yang
2015-08-06 14:07   ` Yakir Yang
2015-08-06 14:19   ` Jingoo Han
2015-08-06 14:19     ` Jingoo Han
2015-08-06 14:19     ` Jingoo Han
2015-08-06 14:29     ` Yakir Yang
2015-08-06 14:29       ` Yakir Yang
2015-08-06 14:29       ` Yakir Yang
2015-08-07 11:25       ` Daniel Vetter
2015-08-07 11:25         ` Daniel Vetter
2015-08-07 13:18         ` Yakir Yang
2015-08-07 13:18           ` Yakir Yang
2015-08-06 14:19 ` [RFC PATCH 3/8] drm: bridge: analogix_dp: split exynos dp driver to bridge dir Yakir Yang
2015-08-06 14:19   ` Yakir Yang
2015-08-06 14:33   ` Jingoo Han
2015-08-06 14:33     ` Jingoo Han
2015-08-06 14:57     ` Yakir Yang
2015-08-06 14:57       ` Yakir Yang
2015-08-06 14:57       ` Yakir Yang
2015-08-06 14:19 ` [RFC PATCH 4/8] drm: rockchip/dp: add rockchip platform dp driver Yakir Yang
2015-08-06 14:19   ` Yakir Yang
2015-08-06 14:19   ` Yakir Yang
2015-08-06 14:19 ` [RFC PATCH 5/8] drm: bridge/analogix_dp: add platform device type support Yakir Yang
2015-08-06 14:19   ` Yakir Yang
2015-08-06 14:19   ` Yakir Yang
2015-08-06 14:22 ` [RFC PATCH 6/8] drm: bridge: analogix_dp: add some rk3288 special registers setting Yakir Yang
2015-08-06 14:22   ` Yakir Yang
2015-08-06 14:22   ` Yakir Yang
2015-08-06 14:24 ` [RFC PATCH 7/8] drm: bridge: analogix_dp: try force hpd after plug in lookup failed Yakir Yang
2015-08-06 14:24   ` Yakir Yang
2015-08-06 14:24   ` Yakir Yang
2015-08-06 14:26 ` Yakir Yang [this message]
2015-08-06 14:26   ` [RFC PATCH 8/8] drm: bridge/analogix_dp: expand the delay time for hpd detect Yakir Yang
2015-08-06 14:26   ` Yakir Yang
2015-08-06 14:41 ` [RFC PATCH 0/8] Add Analogix Core Display Port Driver Jingoo Han
2015-08-06 14:41   ` Jingoo Han
2015-08-06 14:41   ` Jingoo Han
2015-08-06 15:00   ` Yakir Yang
2015-08-06 15:00     ` Yakir Yang
2015-08-07  6:11     ` Ajay kumar
2015-08-07  8:17       ` Yakir Yang

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