On Thu, Apr 27, 2023 at 06:00:09PM +0300, Vinod Govindapillai wrote:
> Follow the values from bspec for the percentage overhead for
> efficiency in MTL BW calculations.
>
> Bspec: 64631
>
> Signed-off-by: Vinod Govindapillai <vinod.govindapillai@xxxxxxxxx>
Looks like the bspec was updated with this new value on March 30th.
Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_bw.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
> index 597d5816ad1b..ab405c48ca3a 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.c
> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
> @@ -379,7 +379,7 @@ static const struct intel_sa_info mtl_sa_info = {
> .deburst = 32,
> .deprogbwlimit = 38, /* GB/s */
> .displayrtids = 256,
> - .derating = 20,
> + .derating = 10,
> };
>
> static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa)
> --
> 2.34.1
>
--
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation
