Re: [PATCH v5 3/5] drm/xe: Raise gt frequency slightly earlier.

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Fri, Nov 13, 2026 at 01:44:57PM +0100, Maarten Lankhorst wrote:
> Move raising the gt frequency to before display_register, so the
> blit that's potentially performed to copy stolen memory to system
> memory will run at full speed.

Is this the thing that drops the media frequency after init?
I've been pondering if we should also be doing the frequency
pumping at runtime around display commits because MMIO
performance is apparently tied in with the media frequency.
Even with media at high frequency MMIO is glacial on MTL+,
and becomes even more so after the media frequency drops :/

> 
> Reviewed-by: Matthew Brost <matthew.brost@intel.com>
> Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
> ---
>  drivers/gpu/drm/xe/xe_device.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
> index 6911c2ac39f82..616e02066ae6d 100644
> --- a/drivers/gpu/drm/xe/xe_device.c
> +++ b/drivers/gpu/drm/xe/xe_device.c
> @@ -1069,6 +1069,9 @@ int xe_device_probe(struct xe_device *xe)
>  	if (err)
>  		return err;
>  
> +	for_each_gt(gt, xe, id)
> +		xe_gt_sanitize_freq(gt);
> +
>  	xe_display_register(xe);
>  
>  	err = xe_oa_register(xe);
> @@ -1093,9 +1096,6 @@ int xe_device_probe(struct xe_device *xe)
>  	if (err)
>  		goto err_unregister_display;
>  
> -	for_each_gt(gt, xe, id)
> -		xe_gt_sanitize_freq(gt);
> -
>  	xe_vsec_init(xe);
>  
>  	err = xe_sriov_init_late(xe);
> -- 
> 2.55.0

-- 
Ville Syrjälä
Intel