** Description changed:

  [Impact]
  SUT attach WD22TB4 dock, plug in two 4K monitor, the monitor resolution can't 
reach 4K 60Hz
  
  [Fix]
  Fix maximum DP source rate.
  
  this patch should be taken first,
- 
https://lore.kernel.org/intel-gfx/20211026104342.198300-2-ankit.k.nauti...@intel.com/
+ 73867c8709) drm/i915/display: Remove check for low voltage sku for max dp 
source rate
  
  Then, on U/J/OEM-5.14, apply 3fd6afb623ba) drm/i915/intel_combo_phy:
  Print I/O voltage info,
  
  [Test Case]
  1. Connect two 4K external monitor to WD22TB4
  2. the monitor resolution can reach 4K 60Hz
  
  [Where problems could occur]
  Low

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https://bugs.launchpad.net/bugs/1967986

Title:
  Fix ADL, WD22TB4,Dual monitors display resolution can't reach 4K 60hz

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