[PATCH 1/4] drm/i915: Drop 64bpp YUV formats from ICL+ SDR planes

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

I'm seeing underruns with these 64bpp YUV formats on TGL.

The weird details:
- only happens on pipe B/C/D SDR planes, pipe A SDR planes
  seem fine, as do all HDR planes
- somehow CDCLK related, higher CDCLK allows for bigger plane
  with these formats without underruns. With 300MHz CDCLK I
  can only go up to 1200 pixels wide or so, with 650MHz even
  a 3840 pixel wide plane was OK
- ICL and ADL so far appear unaffected

So not really sure what's the deal with this, but bspec does
state "64-bit formats supported only on the HDR planes" so
let's just drop these formats from the SDR planes. We already
disallow 64bpp RGB formats.

Cc: stable at vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/skl_universal_plane.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index ff9764cac1e7..80e558042d97 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -106,8 +106,6 @@ static const u32 icl_sdr_y_plane_formats[] = {
 	DRM_FORMAT_Y216,
 	DRM_FORMAT_XYUV8888,
 	DRM_FORMAT_XVYU2101010,
-	DRM_FORMAT_XVYU12_16161616,
-	DRM_FORMAT_XVYU16161616,
 };
 
 static const u32 icl_sdr_uv_plane_formats[] = {
@@ -134,8 +132,6 @@ static const u32 icl_sdr_uv_plane_formats[] = {
 	DRM_FORMAT_Y216,
 	DRM_FORMAT_XYUV8888,
 	DRM_FORMAT_XVYU2101010,
-	DRM_FORMAT_XVYU12_16161616,
-	DRM_FORMAT_XVYU16161616,
 };
 
 static const u32 icl_hdr_plane_formats[] = {
-- 
2.45.2