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Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index 9982f1b1f8c4..07f2e9606337 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -539,6 +539,23 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev, } +/** + * DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_pcie + * + * The amdgpu driver provides a sysfs API for adjusting what power levels + * are enabled for a given power state. The files pp_dpm_sclk, pp_dpm_mclk, + * and pp_dpm_pcie are used for this. + * + * Reading back the files will show you the available power levels within + * the power state and the clock information for those levels. + * + * To manually adjust these states, first select manual using + * power_dpm_force_performance_level. Writing a string of the level + * numbers to the file will select which levels you want to enable. + * E.g., writing 456 to the file will enable levels 4, 5, and 6. + * + */ + static ssize_t amdgpu_get_pp_dpm_sclk(struct device *dev, struct device_attribute *attr, char *buf) |