diff options
| author | Koba Ko <koba.ko@canonical.com> | 2021-08-30 05:02:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-26 15:10:19 +0300 |
| commit | 52cf80714d50598c9195c945237286cd223a0326 (patch) | |
| tree | d550b764b7dd8f8515df85174caf8ee88070b61e /include | |
| parent | 654b40ff096ef8493efd8fe90c10cce6c563b0f1 (diff) | |
| download | linux-52cf80714d50598c9195c945237286cd223a0326.tar.xz | |
drm/amdgpu: Disable PCIE_DPM on Intel RKL Platform
[ Upstream commit b3dc549986eb7b38eba4a144e979dc93f386751f ]
Due to high latency in PCIE clock switching on RKL platforms,
switching the PCIE clock dynamically at runtime can lead to HDMI/DP
audio problems. On newer asics this is handled in the SMU firmware.
For SMU7-based asics, disable PCIE clock switching to avoid the issue.
AMD provide a parameter to disable PICE_DPM.
modprobe amdgpu ppfeaturemask=0xfff7bffb
It's better to contorl PCIE_DPM in amd gpu driver,
switch PCI_DPM by determining intel RKL platform for SMU7-based asics.
Fixes: 1a31474cdb48 ("drm/amd/pm: workaround for audio noise issue")
Ref: https://lists.freedesktop.org/archives/amd-gfx/2021-August/067413.html
Signed-off-by: Koba Ko <koba.ko@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions