[coreboot-gerrit] Change in libgfxinit[master]: gma config: Allow to cache CDClk in variable config state

[Nico Huber (Code Review)]

Hello Arthur Heymans, Matt DeVillier, Thomas Heijligen,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/libgfxinit/+/35714

to look at the new patch set (#2).

Change subject: gma config: Allow to cache CDClk in variable config state
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gma config: Allow to cache CDClk in variable config state

Add `CDClk` and `Max_CDClk` fields to the variable config state.
They will be used to cache the current hardware state, so that
we don't have to poke registers in every call to Update_Outputs().

Also introduce `CDClk_Range`, which is chosen such that common
dot-clock limits (90% of CDClk) are in range of `Frequency_Type`.

Change-Id: I3d9c956eabcedb2f8299a1642ff0172cd7f54e45
Signed-off-by: Nico Huber 
---
M common/hw-gfx-gma-config.ads.template
1 file changed, 18 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/libgfxinit refs/changes/14/35714/2