6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ville Syrjälä ville.syrjala@linux.intel.com
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@vger.kernel.org Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20241218173650.19782-2-ville.s... Reviewed-by: Juha-Pekka Heikkila juhapekka.heikkila@gmail.com (cherry picked from commit 35e1aacfe536d6e8d8d440cd7155366da2541ad4) Signed-off-by: Rodrigo Vivi rodrigo.vivi@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -102,8 +102,6 @@ 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[] = { @@ -130,8 +128,6 @@ 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[] = {