> -Original Message-
> From: Intel-gfx On Behalf Of Ankit
> Nautiyal
> Sent: Thursday, July 21, 2022 2:17 PM
> To: intel-gfx@lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH v2] drm/i915/hdmi: Prune modes that require
> HDMI2.1
> FRL
>
> HDMI2.1 requires some higher resolution video modes to be enumerated only if
> HDMI2.1 Fixed Rate Link (FRL) is supported.
> Current platforms do not support FRL transmission so prune modes that require
> HDMI2.1 FRL.
>
> v2: Fixed the condition to check for dotclock > 600.
> Return MODE_CLOCK_HIGH as mode status.
Pushed the change to drm-intel-next. Thanks for the patch and reviews.
Regards,
Uma Shankar
> Signed-off-by: Ankit Nautiyal
> Reviewed-by: Arun R Murthy (v1)
> ---
> drivers/gpu/drm/i915/display/intel_hdmi.c | 9 +
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index ebd91aa69dd2..a88f589351fa 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2001,6 +2001,15 @@ intel_hdmi_mode_valid(struct drm_connector
> *connector,
> clock *= 2;
> }
>
> + /*
> + * HDMI2.1 requires higher resolution modes like 8k60, 4K120 to be
> + * enumerated only if FRL is supported. Current platforms do not support
> + * FRL so prune the higher resolution modes that require doctclock more
> + * than 600MHz.
> + */
> + if (clock > 60)
> + return MODE_CLOCK_HIGH;
> +
> ycbcr_420_only = drm_mode_is_420_only(>display_info,
> mode);
>
> status = intel_hdmi_mode_clock_valid(connector, clock, has_hdmi_sink,
> ycbcr_420_only);
> --
> 2.25.1
