[PATCH 0/2][SRU][F][linux-firmware] Fix The sound has noise while audio volume is maximum

[koba.ko at canonical.com]

From: Koba Ko <koba.ko at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1926236

[Impact]
The sound has noise while turning the audio volume to maximum

[Fix]
For VEGA & Polaris, need two patches(landed on mainline kernel) to fix and a modprobe parameter
1.(50ceb1fe7a) drm/amd/pm: bug fix for pcie dpm, has landed on oem kernel.
2.(9d03730ecb) drm/amd/pm: workaround for audio noise issue, has landed on oem kernel
3. #modprobe amdgpu ppfeaturemask=0xfff7bffb.
For Navi_1x, need smc firmware to fix.
1. (4fe6e53b96 linux-firmware) amdgpu: update navi10 SMC firmware
1. (8ab7abaf63 linux-firmware) amdgpu: update navi14 SMC firmware

[Test]
Verified on RKL platform 
A. with wx3200(Polaris series) and the following
configuration
1. With these two patch,
1.1. (50ceb1fe7a) drm/amd/pm: bug fix for pcie dpm, has landed on oem kernel.       
1.2. (9d03730ecb) drm/amd/pm: workaround for audio noise issue, has landed on oem kernel

2. doesn't append ppfeaturemask=0xfff7bffb

Can't observe issue.

B. With wx5500(Navi series) and update the related firmware,
Can't observe issue

[Where problems could occur]
Because disabling DPM, the power consumption would be slightly higher.

Alex Deucher (2):
  amdgpu: update navi14 smc firmware
  amdgpu: update navi10 SMC firmware

 amdgpu/navi10_smc.bin | Bin 267970 -> 267970 bytes
 amdgpu/navi14_smc.bin | Bin 264586 -> 264586 bytes
 2 files changed, 0 insertions(+), 0 deletions(-)

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2.17.1