From d901d2ba8a1577ea213e4c4e22e9ca1f67db61dd Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Wed, 12 Aug 2015 12:32:13 +0200 Subject: [PATCH] drm/panel: simple: Correct minimum hsync length of the HannStar HSD070PWW1 panel 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 Signed-off-by: Lucas Stach Signed-off-by: Thierry Reding --- 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 }, -- 2.11.0