[PATCH v7 06/30] drm/display: hdmi_state_helper: Plumb HDMI 2.0 source scrambling capability

[Dmitry Baryshkov]

On Tue, Jun 02, 2026 at 01:44:06AM +0300, Cristian Ciocaltea wrote:
> Toggle drm_connector_hdmi_state.scrambler_needed flag when the TMDS
> character rate exceeds 340 MHz and both the source and the sink advertise
> SCDC scrambling capability.  Drivers no longer need to open-code this
> check.
> 
> According to HDMI 2.0 spec, scrambling is only mandatory above 340 MHz;
> the optional sub-340 MHz scrambling path is intentionally not requested.
> 
> Once all drivers are converted to advertise the scrambler support, the
> unsupported HDMI 2.0 modes could be simply rejected.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
> ---
>  drivers/gpu/drm/display/drm_hdmi_state_helper.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>


-- 
With best wishes
Dmitry