From 1af3d0a8e8b8db855ee3c98d210f8ee01b2bb80f Mon Sep 17 00:00:00 2001 From: Evan Quan <evan.quan@amd.com> Date: Thu, 15 Jun 2023 11:03:49 +0800 Subject: [PATCH] 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> --- drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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, -- GitLab