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| author | Lijo Lazar <lijo.lazar@amd.com> | 2021-03-05 16:02:49 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-03-23 22:58:16 -0400 |
| commit | 6be6424684cb464be65d47cd4158e811f0d75368 (patch) | |
| tree | cab89f28c318dcd2b0731bc4f10aca371121aaff /drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c | |
| parent | 26256ca8a6e773e65e7e237ff972b1b0b7a557e0 (diff) | |
drm/amd/pm: Enable performance determinism on aldebaran
Performance Determinism is a new mode in Aldebaran where PMFW tries to
maintain sustained performance level. It can be enabled on a per-die
basis on aldebaran. To guarantee that it remains within the power cap,
a max GFX frequency needs to be specified in this mode. A new
power_dpm_force_performance_level, "perf_determinism", is defined to enable
this mode in amdgpu. The max frequency (in MHz) can be specified through
pp_dpm_sclk. The mode will be disabled once any other performance level
is chosen.
Ex: To enable perf determinism at 900Mhz max gfx clock
echo perf_determinism > /sys/bus/pci/devices/.../power_dpm_force_performance_level
echo max 900 > /sys/bus/pci/devices/.../pp_dpm_sclk
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c')
0 files changed, 0 insertions, 0 deletions