diff options
| author | Fangzhi Zuo <Jerry.Zuo@amd.com> | 2025-09-24 14:37:01 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-10-07 14:09:19 -0400 |
| commit | 5949e7c4890c3cf65e783c83c355b95e21f10dba (patch) | |
| tree | e06453ea9621c576182dce16bdcd535985c9b42f /drivers | |
| parent | 2e97663760e5fb7ee14f399c68e57b894f01e505 (diff) | |
drm/amd/display: Enable Dynamic DTBCLK Switch
[WHAT]
Since dcn35, DTBCLK can be disabled when no DP2 sink connected for
power saving purpose.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 8e1622bf7a42..0d03e324d5b9 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2000,6 +2000,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) init_data.flags.disable_ips_in_vpb = 0; + /* DCN35 and above supports dynamic DTBCLK switch */ + if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 5, 0)) + init_data.flags.allow_0_dtb_clk = true; + /* Enable DWB for tested platforms only */ if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0)) init_data.num_virtual_links = 1; |