nb/intel/gm45: Fix panel-power-sequence clock divisor

We kept this value at it's default on the native graphics init path.
Maybe the Video BIOS path, too, I don't know if the VBIOS sets it.

The panel power sequencer uses the core display clock (CDCLK). It's
based on the HPLLVCO and a frequency selection we made during raminit.
The value written is the (actual divisor/2)-1 for a 100us timer.

v2: Fix unaligned mmio access inherited from Linux.

v3: Use MCHBAR8() instead. Also, the unaligned access might have
    worked after all.

Change-Id: I877d229865981fb0f96c864bc79e404f6743fd05
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/17619
Tested-by: build bot (Jenkins)
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

0 files changed, 0 insertions, 0 deletions