From 6be6424684cb464be65d47cd4158e811f0d75368 Mon Sep 17 00:00:00 2001 From: Lijo Lazar Date: Fri, 5 Mar 2021 16:02:49 -0500 Subject: 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 Reviewed-by: Kenneth Feng Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/include/kgd_pp_interface.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/include') diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index b26a6f4e5a74..7d5b71e65019 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -48,6 +48,7 @@ enum amd_dpm_forced_level { AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK = 0x40, AMD_DPM_FORCED_LEVEL_PROFILE_PEAK = 0x80, AMD_DPM_FORCED_LEVEL_PROFILE_EXIT = 0x100, + AMD_DPM_FORCED_LEVEL_PERF_DETERMINISM = 0x200, }; enum amd_pm_state_type { -- cgit v1.2.3