Re: [PATCH v15 16/16] phy: rockchip: usbdp: Register DP aux bridge

[Manivannan Sadhasivam]

On Tue, Sep 15, 2026 at 03:50:03PM +0200, Sebastian Reichel wrote:
> Add support to use USB-C connectors with the DP altmode helper code on
> devicetree based platforms. To get this working there must be a DRM
> bridge chain from the DisplayPort controller to the USB-C connector.
> E.g. on Rockchip RK3576:
> 
> root@rk3576 # cat /sys/kernel/debug/dri/0/encoder-0/bridges
> bridge[0]: dw_dp_bridge_funcs
>         refcount: 7
>         type: [10] DP
>         OF: /soc/dp@27e40000:rockchip,rk3576-dp
>         ops: [0x47] detect edid hpd
> bridge[1]: drm_aux_bridge_funcs
>         refcount: 4
>         type: [0] Unknown
>         OF: /soc/phy@2b010000:rockchip,rk3576-usbdp-phy
>         ops: [0x0]
> bridge[2]: drm_aux_hpd_bridge_funcs
>         refcount: 5
>         type: [10] DP
>         OF: /soc/i2c@2ac50000/typec-portc@22/connector:usb-c-connector
>         ops: [0x4] hpd
> 
> Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> Tested-by: Igor Paunovic <royalnet026@xxxxxxxxx> # Orange Pi 5 Plus
> Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>

- Mani

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