@@ -1595,8 +1595,10 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
struct msm_dp *dp = dp_bridge->dp_display;
struct dp_display_private *dp_display;
+ struct dp_panel *dp_panel;
dp_display = container_of(dp, struct dp_display_private, dp_display);
+ dp_panel = dp_display->panel;
memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
@@ -1617,7 +1619,8 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
!!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
dp_display->dp_mode.out_fmt_is_yuv_420 =
- drm_mode_is_420_only(&dp->connector->display_info, adjusted_mode);
+ drm_mode_is_420_only(&dp->connector->display_info, adjusted_mode) &&
+ dp_panel->vsc_sdp_supported;
/* populate wide_bus_support to different layers */
dp_display->ctrl->wide_bus_en =
@@ -53,6 +53,7 @@ static int dp_panel_read_dpcd(struct dp_panel *dp_panel)
if (rc)
return rc;
+ dp_panel->vsc_sdp_supported = drm_dp_vsc_sdp_supported(panel->aux, dpcd);
link_info = &dp_panel->link_info;
link_info->revision = dpcd[DP_DPCD_REV];
major = (link_info->revision >> 4) & 0x0f;
@@ -46,6 +46,7 @@ struct dp_panel {
struct dp_display_mode dp_mode;
struct dp_panel_psr psr_cap;
bool video_test;
+ bool vsc_sdp_supported;
u32 vic;
u32 max_dp_lanes;
In the DP driver, check if VSC SDP is supported and propagate this value to dp_panel. In dp_display's dp_mode, the out_fmt_is_yuv_420 parameter must also utilize this value since YUV420 is only allowed when VSC SDP is supported. Changes in v2: - Move DP programming when VSC SDP is supported to this patch Signed-off-by: Paloma Arellano <quic_parellan@quicinc.com> --- drivers/gpu/drm/msm/dp/dp_display.c | 5 ++++- drivers/gpu/drm/msm/dp/dp_panel.c | 1 + drivers/gpu/drm/msm/dp/dp_panel.h | 1 + 3 files changed, 6 insertions(+), 1 deletion(-)