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drm/amd/pm: update the LC_L1_INACTIVITY setting to address possible noise issue 

It is proved that insufficient LC_L1_INACTIVITY setting can cause audio
noise on some platform. With the LC_L1_INACTIVITY increased to 4ms, the
issue can be resolved.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2023-06-15 11:03:49 +08:00 committed by Alex Deucher
parent 111c1813a1
commit 1af3d0a8e8
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c
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@ -345,7 +345,7 @@ static void nbio_v2_3_init_registers(struct amdgpu_device *adev)
}
#define NAVI10_PCIE__LC_L0S_INACTIVITY_DEFAULT 0x00000000 // off by default, no gains over L1
#define NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT 0x00000009 // 1=1us, 9=1ms
#define NAVI10_PCIE__LC_L1_INACTIVITY_DEFAULT 0x0000000A // 1=1us, 9=1ms, 10=4ms
#define NAVI10_PCIE__LC_L1_INACTIVITY_TBT_DEFAULT 0x0000000E // 400ms
static void nbio_v2_3_enable_aspm(struct amdgpu_device *adev,