drm/i915: Reject 446-480MHz HDMI clock on GLK
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 3 Feb 2021 09:30:44 +0000 (11:30 +0200)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 5 Feb 2021 12:48:22 +0000 (14:48 +0200)
commit41751b3e5c1ac656a86f8d45a8891115281b729e
tree76004a267e4ea58c920cfb4297d56cc82200c5cb
parent7962893ecb853aa7c8925ce237ab6c4274cfc1c7
drm/i915: Reject 446-480MHz HDMI clock on GLK

The BXT/GLK DPLL can't generate certain frequencies. We already
reject the 233-240MHz range on both. But on GLK the DPLL max
frequency was bumped from 300MHz to 594MHz, so now we get to
also worry about the 446-480MHz range (double the original
problem range). Reject any frequency within the higher
problematic range as well.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3000
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210203093044.30532-1-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
drivers/gpu/drm/i915/display/intel_hdmi.c