Files
linux/drivers/gpu/drm/i915/display
Ville Syrjälä 19d36cfafa drm/i915: Document BDW+ DRRS M/N programming requirements
When reprogramming M/N live on BDW+ we must write the LINK_N
register last as it's the one that arms the double buffered
register update for all the M/N registers. Document this so
that we don't accidentally break things.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128103757.22461-18-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2022-02-01 11:33:23 +02:00
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