From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> commit c7b49506b3ba7a62335e6f666a43f67d5cd9fd1e upstream. 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@xxxxxxxxxxxxxxx Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20241218173650.19782-2-ville.syrjala@xxxxxxxxxxxxxxx Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx> (cherry picked from commit 35e1aacfe536d6e8d8d440cd7155366da2541ad4) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/skl_universal_plane.c | 4 ---- 1 file changed, 4 deletions(-) --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c @@ -98,8 +98,6 @@ 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[] = { @@ -126,8 +124,6 @@ static const u32 icl_sdr_uv_plane_format DRM_FORMAT_Y216, DRM_FORMAT_XYUV8888, DRM_FORMAT_XVYU2101010, - DRM_FORMAT_XVYU12_16161616, - DRM_FORMAT_XVYU16161616, }; static const u32 icl_hdr_plane_formats[] = { Patches currently in stable-queue which might be from ville.syrjala@xxxxxxxxxxxxxxx are queue-5.15/drm-i915-drop-64bpp-yuv-formats-from-icl-sdr-planes.patch
