diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0989-drm-panel-simple-Alter-the-timing-for-the-Pi-7-DSI-d.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-0989-drm-panel-simple-Alter-the-timing-for-the-Pi-7-DSI-d.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0989-drm-panel-simple-Alter-the-timing-for-the-Pi-7-DSI-d.patch b/target/linux/bcm27xx/patches-6.1/950-0989-drm-panel-simple-Alter-the-timing-for-the-Pi-7-DSI-d.patch new file mode 100644 index 0000000000..ef70de7ee4 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-0989-drm-panel-simple-Alter-the-timing-for-the-Pi-7-DSI-d.patch @@ -0,0 +1,33 @@ +From b1bd2f406eab321be642decd6aee6b6222aec62b Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Fri, 28 Jul 2023 17:40:27 +0100 +Subject: [PATCH] drm/panel: simple: Alter the timing for the Pi 7" DSI display + +vc4 has always fixed up the timing, so the values defined have +never actually appeared on the wire. +The display appears to want a slightly longer HFP, so extend +the timings and recompute the clock to give the same frame rate. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/panel/panel-simple.c | 8 ++++---- + 1 file changed, 4 insertions(+), 4 deletions(-) + +--- a/drivers/gpu/drm/panel/panel-simple.c ++++ b/drivers/gpu/drm/panel/panel-simple.c +@@ -3241,11 +3241,11 @@ static const struct panel_desc qishenglo + }; + + static const struct drm_display_mode raspberrypi_7inch_mode = { +- .clock = 25979400 / 1000, ++ .clock = 27777, + .hdisplay = 800, +- .hsync_start = 800 + 2, +- .hsync_end = 800 + 2 + 2, +- .htotal = 800 + 2 + 2 + 46, ++ .hsync_start = 800 + 59, ++ .hsync_end = 800 + 59 + 2, ++ .htotal = 800 + 59 + 2 + 46, + .vdisplay = 480, + .vsync_start = 480 + 7, + .vsync_end = 480 + 7 + 2, |