On Mon, Jan 25, 2021 at 03:27:11PM +0200, Ville Syrjala wrote:
From: Ville Syrjälä ville.syrjala@linux.intel.com
commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32 upstream.
Let's not enable the 4:4:4->4:2:0 conversion bit in the DFP unless we're actually outputting YCbCr 4:4:4. It would appear some protocol converters blindy consult this bit even when the source is outputting RGB, resulting in a visual mess.
Cc: stable@vger.kernel.org # 0e634efd858e: drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/ Cc: stable@vger.kernel.org Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2914 Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20210111164111.13302-1-ville.s... Fixes: 181567aa9f0d ("drm/i915: Do YCbCr 444->420 conversion via DP protocol converters") Reviewed-by: Jani Nikula jani.nikula@intel.com (cherry picked from commit 3170a21f7059c4660c469f59bf529f372a57da5f) Signed-off-by: Jani Nikula jani.nikula@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20210118154355.24453-1-ville.s... (cherry picked from commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32)
Note the extra depdendency on commit 0e634efd858e ("drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/").
Thanks for this, now queued up.
greg k-h