Commit 1af3d0a8 authored by Evan Quan's avatar Evan Quan Committed by Alex Deucher
Browse files

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: default avatarEvan Quan <evan.quan@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 111c1813

drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c

+1 −1
Original line number Diff line number Diff line
@@ -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,