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34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
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From b1bd2f406eab321be642decd6aee6b6222aec62b Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Fri, 28 Jul 2023 17:40:27 +0100
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Subject: [PATCH] drm/panel: simple: Alter the timing for the Pi 7" DSI display
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vc4 has always fixed up the timing, so the values defined have
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never actually appeared on the wire.
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The display appears to want a slightly longer HFP, so extend
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the timings and recompute the clock to give the same frame rate.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/panel/panel-simple.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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--- a/drivers/gpu/drm/panel/panel-simple.c
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+++ b/drivers/gpu/drm/panel/panel-simple.c
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@@ -3241,11 +3241,11 @@ static const struct panel_desc qishenglo
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};
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static const struct drm_display_mode raspberrypi_7inch_mode = {
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- .clock = 25979400 / 1000,
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+ .clock = 27777,
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.hdisplay = 800,
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- .hsync_start = 800 + 2,
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- .hsync_end = 800 + 2 + 2,
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- .htotal = 800 + 2 + 2 + 46,
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+ .hsync_start = 800 + 59,
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+ .hsync_end = 800 + 59 + 2,
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+ .htotal = 800 + 59 + 2 + 46,
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.vdisplay = 480,
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.vsync_start = 480 + 7,
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.vsync_end = 480 + 7 + 2,
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