From: Lucas Stach <l.stach@pengutronix.de>
To: Thierry Reding <thierry.reding@gmail.com>,
David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org
Cc: kernel@pengutronix.de, patchwork-lst@pengutronix.de
Subject: [PATCH v2 2/2] drm/panel: simple: correct minimum hsync length of the HannStar HSD070PWW1 panel
Date: Wed, 12 Aug 2015 12:32:13 +0200 [thread overview]
Message-ID: <1439375533-28718-2-git-send-email-l.stach@pengutronix.de> (raw)
In-Reply-To: <1439375533-28718-1-git-send-email-l.stach@pengutronix.de>
From: Philipp Zabel <p.zabel@pengutronix.de>
According to the data sheet, the minimum horizontal blanking interval
is 54 clocks (1 + 52 + 1), but tests with a Nitrogen6X have shown the
minimum working horizontal blanking interval to be 60 clocks.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
v2: no changes
---
drivers/gpu/drm/panel/panel-simple.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index a1cd431e17a6..39e9dffe07d9 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -713,7 +713,12 @@ static const struct display_timing hannstar_hsd070pww1_timing = {
.hactive = { 1280, 1280, 1280 },
.hfront_porch = { 1, 1, 10 },
.hback_porch = { 1, 1, 10 },
- .hsync_len = { 52, 158, 661 },
+ /*
+ * According to the data sheet, the minimum horizontal blanking interval
+ * is 54 clocks (1 + 52 + 1), but tests with a Nitrogen6X have shown the
+ * minimum working horizontal blanking interval to be 60 clocks.
+ */
+ .hsync_len = { 58, 158, 661 },
.vactive = { 800, 800, 800 },
.vfront_porch = { 1, 1, 10 },
.vback_porch = { 1, 1, 10 },
--
2.4.6
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next prev parent reply other threads:[~2015-08-12 10:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 10:32 [PATCH v2 1/2] drm/panel: simple: Add bus format for HannStar HSD070PWW1 LVDS panel Lucas Stach
2015-08-12 10:32 ` Lucas Stach [this message]
2015-08-13 12:14 ` Thierry Reding
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