[SRU][OEM-B-OSP1/E/unstable][PATCH v2 0/2] drm/i915: Fix the issue of "azx_get_response timeout" for hdmi audio on ICL platforms

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1847192

In the V2, I dropped the Disco, so these two patches will not be
merged to Disco since Disco kernel doesn't support ICL graphic,
these two patches are useless to Disco kernel.



Since Bionic kernel doesn't support ICL platforms (i915), so these two
patches will not be sent to Bionic kernel.

[Impact]
On the ICL platforms, the hdmi can't work well, the audio driver
will print "azx_get_response timeout" randomly, then the whole
audio doesn't work anymore.

[Fix]
Intel provide these two fixes to us, and we tested these two
patches, it really fixed the issue.

[Test Case]
Boot and check the hdmi audio, then suspend and resume, check
the hdmi audio, all work well.

[Regression Risk]
Low, Only enable the audio PIN and enable the clock for ICL. we
tested on both ICL and non-ICL, all worked well as before.


Kai Vehmanen (2):
  UBUNTU: SAUCE: drm/i915: Fix audio power up sequence for gen10+
    display
  UBUNTU: SAUCE: drm/i915: extend audio CDCLK>=2*BCLK constraint to more
    platforms

 drivers/gpu/drm/i915/i915_reg.h    |  3 +++
 drivers/gpu/drm/i915/intel_audio.c | 11 ++++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)

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2.17.1