On Thu, 2025-11-27 at 19:49 +0200, Imre Deak wrote:
> The encoder state computation should use the
> drm_display_mode::crtc_clock member, instead of the clock member, the
> former one possibly having a necessary adjustment wrt. to the latter
> due to driver specific constraints. In practice the two values should
> not differ at spots changed in this patch, since only MSO and 3D modes
> would make them different, neither MSO or 3D relevant here, but still
> use the expected crtc_clock version for consistency.
> 
> Signed-off-by: Imre Deak <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index beda340d05923..d70cb35cf68bc 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2050,7 +2050,8 @@ static int dsc_compute_link_config(struct intel_dp 
> *intel_dp,
>                                       continue;
>                       } else {
>                               if 
> (!is_bw_sufficient_for_dsc_config(dsc_bpp_x16, link_rate,
> -                                                                  
> lane_count, adjusted_mode->clock,
> +                                                                  lane_count,
> +                                                                  
> adjusted_mode->crtc_clock,
>                                                                    
> pipe_config->output_format,
>                                                                    timeslots))
>                                       continue;
> @@ -2211,7 +2212,7 @@ static int dsc_compute_compressed_bpp(struct intel_dp 
> *intel_dp,
>       int bpp_x16;
>       int ret;
>  
> -     dsc_joiner_max_bpp = get_max_compressed_bpp_with_joiner(display, 
> adjusted_mode->clock,
> +     dsc_joiner_max_bpp = get_max_compressed_bpp_with_joiner(display, 
> adjusted_mode->crtc_clock,
>                                                               
> adjusted_mode->hdisplay,
>                                                               
> num_joined_pipes);
>       max_bpp_x16 = min(fxp_q4_from_int(dsc_joiner_max_bpp), 
> limits->link.max_bpp_x16);

Reviewed-by: Luca Coelho <[email protected]>

--
Cheers,
Luca.

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