The eDP controller does not have a reliable way keep panel powered on to read the sink capabilities. So, the controller driver cannot validate if a mode can be supported by the source. We will rely on the panel driver to populate only the supported modes for now. Signed-off-by: Sankeerth Billakanti <quic_sbillaka@xxxxxxxxxxx> Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx> --- Changes in v9: - none Changes in v8: - add the drm/msm/dp tag in the commit title drivers/gpu/drm/msm/dp/dp_display.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index f197694..49fac955 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -998,6 +998,14 @@ enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge, return -EINVAL; } + /* + * The eDP controller currently does not have a reliable way of + * enabling panel power to read sink capabilities. So, we rely + * on the panel driver to populate only supported modes for now. + */ + if (dp->is_edp) + return MODE_OK; + if ((dp->max_pclk_khz <= 0) || (dp->max_pclk_khz > DP_MAX_PIXEL_CLK_KHZ) || (mode->clock > dp->max_pclk_khz)) -- 2.7.4
