diff options
| -rw-r--r-- | drivers/gpu/drm/amd/include/amd_shared.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index 6b8a40051f41..10dc481ecbc4 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -162,6 +162,34 @@ enum amd_powergating_state { #define AMD_PG_SUPPORT_ATHUB (1 << 16) #define AMD_PG_SUPPORT_JPEG (1 << 17) +/** + * enum PP_FEATURE_MASK - Used to mask power play features. + * + * @PP_SCLK_DPM_MASK: Dynamic adjustment of the system (graphics) clock. + * @PP_MCLK_DPM_MASK: Dynamic adjustment of the memory clock. + * @PP_PCIE_DPM_MASK: Dynamic adjustment of PCIE clocks and lanes. + * @PP_SCLK_DEEP_SLEEP_MASK: System (graphics) clock deep sleep. + * @PP_POWER_CONTAINMENT_MASK: Power containment. + * @PP_UVD_HANDSHAKE_MASK: Unified video decoder handshake. + * @PP_SMC_VOLTAGE_CONTROL_MASK: Dynamic voltage control. + * @PP_VBI_TIME_SUPPORT_MASK: Vertical blank interval support. + * @PP_ULV_MASK: Ultra low voltage. + * @PP_ENABLE_GFX_CG_THRU_SMU: SMU control of GFX engine clockgating. + * @PP_CLOCK_STRETCH_MASK: Clock stretching. + * @PP_OD_FUZZY_FAN_CONTROL_MASK: Overdrive fuzzy fan control. + * @PP_SOCCLK_DPM_MASK: Dynamic adjustment of the SoC clock. + * @PP_DCEFCLK_DPM_MASK: Dynamic adjustment of the Display Controller Engine Fabric clock. + * @PP_OVERDRIVE_MASK: Over- and under-clocking support. + * @PP_GFXOFF_MASK: Dynamic graphics engine power control. + * @PP_ACG_MASK: Adaptive clock generator. + * @PP_STUTTER_MODE: Stutter mode. + * @PP_AVFS_MASK: Adaptive voltage and frequency scaling. + * + * To override these settings on boot, append amdgpu.ppfeaturemask=<mask> to + * the kernel's command line parameters. This is usually done through a system's + * boot loader (E.g. GRUB). If manually loading the driver, pass + * ppfeaturemask=<mask> as a modprobe parameter. + */ enum PP_FEATURE_MASK { PP_SCLK_DPM_MASK = 0x1, PP_MCLK_DPM_MASK = 0x2, |