drm/amd/pm: fulfill SMU13 OD settings init and restore

Gfxclk fmin/fmax, Uclk fmin/fmax and Gfx v/f curve voltage offset
OD settings are supported for SMU13.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 19 insertions, 7 deletions

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index da0da03569e8..a57952b93e73 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -678,7 +678,12 @@ static ssize_t amdgpu_set_pp_table(struct device *dev,
  *   clock labeled OD_MCLK
  *
  * - three <frequency, voltage> points labeled OD_VDDC_CURVE.
- *   They can be used to calibrate the sclk voltage curve.
+ *   They can be used to calibrate the sclk voltage curve. This is
+ *   available for Vega20 and NV1X.
+ *
+ * - voltage offset for the six anchor points of the v/f curve labeled
+ *   OD_VDDC_CURVE. They can be used to calibrate the v/f curve. This
+ *   is only availabe for some SMU13 ASICs.
  *
  * - voltage offset(in mV) applied on target voltage calculation.
  *   This is available for Sienna Cichlid, Navy Flounder and Dimgrey
@@ -719,12 +724,19 @@ static ssize_t amdgpu_set_pp_table(struct device *dev,
  *   E.g., "p 2 0 800" would set the minimum core clock on core
  *   2 to 800Mhz.
  *
- *   For sclk voltage curve, enter the new values by writing a
- *   string that contains "vc point clock voltage" to the file. The
- *   points are indexed by 0, 1 and 2. E.g., "vc 0 300 600" will
- *   update point1 with clock set as 300Mhz and voltage as
- *   600mV. "vc 2 1000 1000" will update point3 with clock set
- *   as 1000Mhz and voltage 1000mV.
+ *   For sclk voltage curve,
+ *     - For NV1X, enter the new values by writing a string that
+ *       contains "vc point clock voltage" to the file. The points
+ *       are indexed by 0, 1 and 2. E.g., "vc 0 300 600" will update
+ *       point1 with clock set as 300Mhz and voltage as 600mV. "vc 2
+ *       1000 1000" will update point3 with clock set as 1000Mhz and
+ *       voltage 1000mV.
+ *     - For SMU13 ASICs, enter the new values by writing a string that
+ *       contains "vc anchor_point_index voltage_offset" to the file.
+ *       There are total six anchor points defined on the v/f curve with
+ *       index as 0 - 5.
+ *       - "vc 0 10" will update the voltage offset for point1 as 10mv.
+ *       - "vc 5 -10" will update the voltage offset for point6 as -10mv.
  *
  *   To update the voltage offset applied for gfxclk/voltage calculation,
  *   enter the new value by writing a string that contains "vo offset".