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drm/amd/pm: correct SMU13 gfx voltage related OD settings

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The voltage offset setting will be applied to the whole v/f curve line
instead of per anchor point base.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan
2023-08-21 14:15:13 +08:00
committed by Alex Deucher
parent 2c01726389
commit e835bc2628
3 changed files with 42 additions and 63 deletions
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43
drivers/gpu/drm/amd/pm/amdgpu_pm.c
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@@ -643,18 +643,14 @@ static ssize_t amdgpu_set_pp_table(struct device *dev,
* 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
* Cavefish. For these ASICs, the target voltage calculation can be
* illustrated by "voltage = voltage calculated from v/f curve +
* overdrive vddgfx offset"
* This is available for Sienna Cichlid, Navy Flounder, Dimgrey
* Cavefish and some later SMU13 ASICs. For these ASICs, the target
* voltage calculation can be illustrated by "voltage = voltage
* calculated from v/f curve + overdrive vddgfx offset"
*
* - a list of valid ranges for sclk, mclk, and voltage curve points
* labeled OD_RANGE
* - a list of valid ranges for sclk, mclk, voltage curve points
* or voltage offset labeled OD_RANGE
*
* < For APUs >
*
@@ -686,24 +682,17 @@ 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,
* - 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.
* For sclk voltage curve supported by Vega20 and 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.
*
* To update the voltage offset applied for gfxclk/voltage calculation,
* enter the new value by writing a string that contains "vo offset".
* This is supported by Sienna Cichlid, Navy Flounder and Dimgrey Cavefish.
* And the offset can be a positive or negative value.
* For voltage offset supported by Sienna Cichlid, Navy Flounder, Dimgrey
* Cavefish and some later SMU13 ASICs, enter the new value by writing a
* string that contains "vo offset". E.g., "vo -10" will update the extra
* voltage offset applied to the whole v/f curve line as -10mv.
*
* - When you have edited all of the states as needed, write "c" (commit)
* to the file to commit your changes