The Raspberry Pi display driver for Linux may support 4K@60Hz

Image: raspberrypi

Changes from v6:
– Rebased on current drm-misc-next
– Removed stale clk_request pointer

Changes from v5:
– Fixed unused variables warning

Changes from v4:
– Removed the patches already applied
– Added various fixes for the issues that have been discovered on the
downstream tree

Changes from v3:
– Rework the encoder retrieval code that was broken on the RPi3 and older
– Fix a scrambling enabling issue on some display

Changes from v2:
– Gathered the various tags
– Added Cc stable when relevant
– Split out the check to test whether the scrambler is required into
an helper
– Fixed a bug where the scrambler state wouldn’t be tracked properly
if it was enabled at boot

Changes from v1:
– Dropped the range accessors
– Drop the mention of force_turbo
– Reordered the SCRAMBLER_CTL register to match the offset
– Removed duplicate HDMI_14_MAX_TMDS_CLK define
– Warn about enable_hdmi_4kp60 only if there’s some modes that can’t be reached
– Rework the BVB clock computation