[PATCH 2/2] drm/amdgpu/pm: add documentation for pp_od_clock_voltage for vangogh

[Quan, Evan]

[AMD Public Use]

Series is reviewed-by: Evan Quan <evan.quan at amd.com>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex
> Deucher
> Sent: Saturday, May 1, 2021 12:43 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
> Subject: [PATCH 2/2] drm/amdgpu/pm: add documentation for
> pp_od_clock_voltage for vangogh
> 
> Vangogh follows other APUs, but also allows core clock adjustments.
> 
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/pm/amdgpu_pm.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> index cbd38f2be958..082b01e872fe 100644
> --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
> @@ -743,6 +743,15 @@ static ssize_t amdgpu_set_pp_table(struct device
> *dev,
>   *
>   * - a list of valid ranges for sclk labeled OD_RANGE
>   *
> + * < For VanGogh >
> + *
> + * Reading the file will display:
> + *
> + * - minimum and maximum engine clock labeled OD_SCLK
> + * - minimum and maximum core clocks labeled OD_CCLK
> + *
> + * - a list of valid ranges for sclk and cclk labeled OD_RANGE
> + *
>   * To manually adjust these settings:
>   *
>   * - First select manual using power_dpm_force_performance_level
> @@ -751,7 +760,10 @@ static ssize_t amdgpu_set_pp_table(struct device
> *dev,
>   *   string that contains "s/m index clock" to the file. The index
>   *   should be 0 if to set minimum clock. And 1 if to set maximum
>   *   clock. E.g., "s 0 500" will update minimum sclk to be 500 MHz.
> - *   "m 1 800" will update maximum mclk to be 800Mhz.
> + *   "m 1 800" will update maximum mclk to be 800Mhz. For core
> + *   clocks on VanGogh, the string contains "p core index clock".
> + *   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
> --
> 2.30.2
> 
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.
> freedesktop.org%2Fmailman%2Flistinfo%2Famd-
> gfx&data=04%7C01%7Cevan.quan%40amd.com%7C79ef0e2bf6b247c1c
> 77808d90bf70331%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C63
> 7553977806057179%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMD
> AiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=
> MTCNQ%2F2y97czSUCtxLtzgZNWbtC2UPArEEF2lTtB50Y%3D&reserved=
> 0