[PATCH v2 0/4] Add HDMI 2.0 support to DW HDMI QP TX

Cristian Ciocaltea cristian.ciocaltea at collabora.com
Mon Jan 12 14:40:46 PST 2026


On 1/13/26 12:26 AM, Cristian Ciocaltea wrote:
> This patch series provides the missing support for high TMDS clock ratio
> and scrambling to DW HDMI QP TX library, required for handling HDMI 2.0
> display modes on RK3576 & RK3588 SoCs.
> 
> In order to allow addressing the SCDC status lost on sink disconnects,
> it adds an atomic variant of the drm_bridge_funcs.detect callback and a
> new drm_bridge_detect_ctx() helper, which is further used in
> drm_bridge_connector to switch to ->detect_ctx hook.
> 
> Furthermore, it optimizes HPD event handling in dw_hdmi_qp Rockchip
> platform driver to run the detect cycle on the affected connector only.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
> ---
> Changes in v2:
> - Collected Tested-by tags from Diederik and Maud
> - Rebased onto latest drm-misc-next
> - Ensured the recently introduced 'no-hpd' support for dealing with
>   unconnected/repurposed/broken HPD pin is limited to HDMI 1.4 rates

Chris, could you please confirm no-hpd is still functional with this series on
your Gameforce Ace board when testing with a HDMI 2.0 display?

Thanks,
Cristian




More information about the linux-arm-kernel mailing list