mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
|
From 6f0bbf91998cb04030731bc8b254209345cbe9f1 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
||
|
|
Date: Fri, 12 Feb 2021 17:31:37 +0000
|
||
|
|
Subject: [PATCH] drm/vc4: Change the default DPI format to being
|
||
|
|
18bpp, not 24.
|
||
|
|
|
||
|
|
DPI hasn't really been used up until now, so the default has
|
||
|
|
been meaningless.
|
||
|
|
In theory we should be able to pass the desired format for the
|
||
|
|
adjacent bridge chip through, but framework seems to be missing
|
||
|
|
for that.
|
||
|
|
|
||
|
|
As the main device to use DPI is the VGA666 or Adafruit Kippah,
|
||
|
|
both of which use RGB666, change the default to being RGB666 instead
|
||
|
|
of RGB888.
|
||
|
|
|
||
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++--
|
||
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
|
||
|
|
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
|
||
|
|
@@ -150,8 +150,8 @@ static void vc4_dpi_encoder_enable(struc
|
||
|
|
}
|
||
|
|
drm_connector_list_iter_end(&conn_iter);
|
||
|
|
|
||
|
|
- /* Default to 24bit if no connector or format found. */
|
||
|
|
- dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, DPI_FORMAT);
|
||
|
|
+ /* Default to 18bit if no connector or format found. */
|
||
|
|
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, DPI_FORMAT);
|
||
|
|
|
||
|
|
if (connector) {
|
||
|
|
if (connector->display_info.num_bus_formats) {
|