This is a note to let you know that I've just added the patch titled
drm/msm/dsi: set video mode widebus enable bit when widebus is enabled
to the 6.10-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-msm-dsi-set-video-mode-widebus-enable-bit-when-w.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c648af7d4a2e21aabcb5ae779d17413b51729c1b
Author: Jonathan Marek <jonathan@xxxxxxxx>
Date: Thu May 30 13:56:48 2024 +0800
drm/msm/dsi: set video mode widebus enable bit when widebus is enabled
[ Upstream commit 007870b8eaf54739c7b417ddaf90bf364b7e4bc8 ]
The value returned by msm_dsi_wide_bus_enabled() doesn't match what the
driver is doing in video mode. Fix that by actually enabling widebus for
video mode.
Fixes: efcbd6f9cdeb ("drm/msm/dsi: Enable widebus for DSI")
Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx>
Tested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> # on SM8650-HDK
Patchwork: https://patchwork.freedesktop.org/patch/596232/
Link: https://lore.kernel.org/r/20240530-msm-drm-dsc-dsi-video-upstream-4-v6-4-2ab1d334c657@xxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index a50f4dda59410..47f5858334f61 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -754,6 +754,8 @@ static void dsi_ctrl_enable(struct msm_dsi_host *msm_host,
data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags));
data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt));
data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel);
+ if (msm_dsi_host_is_wide_bus_enabled(&msm_host->base))
+ data |= DSI_VID_CFG0_DATABUS_WIDEN;
dsi_write(msm_host, REG_DSI_VID_CFG0, data);
/* Do not swap RGB colors */
@@ -778,7 +780,6 @@ static void dsi_ctrl_enable(struct msm_dsi_host *msm_host,
if (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_3)
data |= DSI_CMD_MODE_MDP_CTRL2_BURST_MODE;
- /* TODO: Allow for video-mode support once tested/fixed */
if (msm_dsi_host_is_wide_bus_enabled(&msm_host->base))
data |= DSI_CMD_MODE_MDP_CTRL2_DATABUS_WIDEN;
