mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +00:00
20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From bf6ce41170822705037cc070b89a85ac4e6a4645 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
|
|
@@ -188,8 +188,8 @@ static void vc4_dpi_encoder_enable(struc
|
|
break;
|
|
}
|
|
} else {
|
|
- /* Default to 24bit if no connector found. */
|
|
- dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, DPI_FORMAT);
|
|
+ /* Default to 18bit if no connector found. */
|
|
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, DPI_FORMAT);
|
|
}
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
|