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| author | Alvin Lee <Alvin.Lee2@amd.com> | 2023-04-27 15:10:13 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 09:35:02 -0400 |
| commit | 84f14428b1e0d1f61776c5fcfdef181129533e0b (patch) | |
| tree | c643dc90ad2be58bdbbf7c3c61aad801da73f78b /drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | |
| parent | 62cc621604a466ede81a125a2ed63e05695a48cc (diff) | |
| download | linux-84f14428b1e0d1f61776c5fcfdef181129533e0b.tar.gz linux-84f14428b1e0d1f61776c5fcfdef181129533e0b.tar.bz2 linux-84f14428b1e0d1f61776c5fcfdef181129533e0b.zip | |
drm/amd/display: Enforce 60us prefetch for 200Mhz DCFCLK modes
[Description]
- Due to bandwidth / arbitration issues at 200Mhz DCFCLK,
we want to enforce minimum 60us of prefetch to avoid
intermittent underflow issues
- Since 60us prefetch is already enforced for UCLK DPM0,
and many DCFCLK's > 200Mhz are mapped to UCLK DPM1, in
theory there should not be any UCLK DPM regressions by
enforcing greater prefetch
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
0 files changed, 0 insertions, 0 deletions