[coreboot] Re: T440P porting and issues

Is this why haswell minidp sound is broken?

/**
  * snd_hdac_i915_set_bclk - Reprogram BCLK for HSW/BDW
  * @bus: HDA core bus
  *
  * Intel HSW/BDW display HDA controller is in GPU. Both its power and 
link BCLK
  * depends on GPU. Two Extended Mode registers EM4 (M value) and EM5 (N 
Value)
  * are used to convert CDClk (Core Display Clock) to 24MHz BCLK:
  * BCLK = CDCLK * M / N
  * The values will be lost when the display power well is disabled and 
need to
  * be restored to avoid abnormal playback speed.

https://review.coreboot.org/c/coreboot/+/50143 failed, now it's all 
refactored, those regs are never set causing the windows driver to fail 
to load.