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, optimize 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@collabora.com>
---
Cristian Ciocaltea (4):
      drm/bridge: Add ->detect_ctx hook and drm_bridge_detect_ctx()
      drm/bridge-connector: Switch to using ->detect_ctx hook
      drm/bridge: dw-hdmi-qp: Add high TMDS clock ratio and scrambling support
      drm/rockchip: dw_hdmi_qp: Do not send HPD events for all connectors

 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c   | 174 +++++++++++++++++++++++--
 drivers/gpu/drm/display/drm_bridge_connector.c |  73 ++++++-----
 drivers/gpu/drm/drm_bridge.c                   |  58 +++++++++
 drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c |  44 +++----
 include/drm/drm_bridge.h                       |  30 +++++
 5 files changed, 308 insertions(+), 71 deletions(-)
---
base-commit: ac5b392a8c355001c4c3f230a0e4b1f904e359ca
change-id: 20251203-dw-hdmi-qp-scramb-cdbd8b57ccf9

On 12/3/25 8:27 PM, 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.

Please also try the following PHY patch if you encounter issues while testing
1080p@120Hz with 10-bit RGB:

https://lore.kernel.org/all/20251204-phy-hdptx-pll-fix-v1-1-d94fd6cfd59b@collabora.com/

Awesome work! I've been waiting for this feature!

I can now actually get 1440p100 on my display and 4k60 on my tv over HDMI.

Tested-by: Maud Spierings <maud_spierings@hotmail.com>

Kind regards,
Maud

> 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, optimize 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@collabora.com>
> ---
> Cristian Ciocaltea (4):
>        drm/bridge: Add ->detect_ctx hook and drm_bridge_detect_ctx()
>        drm/bridge-connector: Switch to using ->detect_ctx hook
>        drm/bridge: dw-hdmi-qp: Add high TMDS clock ratio and scrambling support
>        drm/rockchip: dw_hdmi_qp: Do not send HPD events for all connectors
>
>   drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c   | 174 +++++++++++++++++++++++--
>   drivers/gpu/drm/display/drm_bridge_connector.c |  73 ++++++-----
>   drivers/gpu/drm/drm_bridge.c                   |  58 +++++++++
>   drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c |  44 +++----
>   include/drm/drm_bridge.h                       |  30 +++++
>   5 files changed, 308 insertions(+), 71 deletions(-)
> ---
> base-commit: ac5b392a8c355001c4c3f230a0e4b1f904e359ca
> change-id: 20251203-dw-hdmi-qp-scramb-cdbd8b57ccf9

On 12/7/25 3:16 PM, Maud Spierings wrote:
> Awesome work! I've been waiting for this feature!
> 
> I can now actually get 1440p100 on my display and 4k60 on my tv over HDMI.
> 
> Tested-by: Maud Spierings <maud_spierings@hotmail.com>

Thanks,
Cristian