Eric Anholt 851479ad59 drm/vc4: Bring HDMI up from power off if necessary.
If the firmware hadn't brought up HDMI for us, we need to do its
power-on reset sequence (reset HD and and clear its STANDBY bits,
reset HDMI, and leave the PHY disabled).

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-02-26 15:51:10 -08:00
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