Re: [PATCH v6 9/9] drm/i915/vrr: Enable cmrr

"Borah, Chaitanya Kumar" <[email protected]> Thu, 23 Jul 2026 21:51:46 +0530
Newsgroups org.freedesktop.lists.intel-gfx,org.freedesktop.lists.intel-xe
Message-ID <[email protected]>

On 7/22/2026 10:09 AM, Mitul Golani wrote:
> Enable CMRR during compute config and add related state
> checker for the same.
> 
> --v2:
> - Everything else except enable compute to handle before this patch
> (Chaitanya)
> 
> --v3:
> - Remove redundant return from compute config
> 
> Signed-off-by: Mitul Golani <[email protected]>
> ---
>   drivers/gpu/drm/i915/display/intel_vrr.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
> index 6bc3ccd62513..ed23a03b0d3d 100644
> --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> @@ -302,6 +302,8 @@ intel_vrr_cmrr_compute_config(struct intel_crtc_state *crtc_state)
>   	adjusted_mode->crtc_vtotal = div64_u64_rem(dividend,
>   						   crtc_state->vrr.cmrr.cmrr_n,
>   						   &crtc_state->vrr.cmrr.cmrr_m);
> +
> +	crtc_state->vrr.cmrr.enable = true;

We will also need to clear it (and cmrr_n, cmrr_m ) at the beginning of 
the compute config. If we only have this statement cmrr.enable will 
always remain true once set as it propagates through duplicated crtc states.

>   }
>   
>   static