From: Evan Quan Date: Thu, 15 Jun 2023 03:03:49 +0000 (+0800) Subject: drm/amd/pm: update the LC_L1_INACTIVITY setting to address possible noise issue X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1af3d0a8e8b8db855ee3c98d210f8ee01b2bb80f;p=linux.git 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index 7ba47fc1917b2..4038455d79984 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -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,