This is a note to let you know that I've just added the patch titled
drm/vc4: dpi: Fix format mapping for RGB565
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-vc4-dpi-fix-format-mapping-for-rgb565.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d13f6f62ee45ed7164bedb21cfe78bd576b874cb
Author: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Date: Thu Dec 1 09:42:52 2022 +0100
drm/vc4: dpi: Fix format mapping for RGB565
[ Upstream commit 0870d86eac8a9abd89a0be1b719d5dc5bac936f0 ]
The mapping is incorrect for RGB565_1X16 as it should be
DPI_FORMAT_18BIT_666_RGB_1 instead of DPI_FORMAT_18BIT_666_RGB_3.
Fixes: 08302c35b59d ("drm/vc4: Add DPI driver")
Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221013-rpi-dpi-improvements-v3-7-eb76e26a772d@xxxxxxxxxx
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index c567396f050e9..9ea2e7beef0ce 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -175,7 +175,7 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
DPI_FORMAT);
break;
case MEDIA_BUS_FMT_RGB565_1X16:
- dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1,
DPI_FORMAT);
break;
default:
