Re: [PATCH 1/2] dt-bindings: media: add ITE IT6625/IT6626 HDMI bridge binding

[Sakari Ailus]

Hi Hermes,

Thanks for the set. I know the set has been merged already so could you
address the issues in follow-up patches, please?

On Mon, Jul 20, 2026 at 03:57:45PM +0800, Hermes Wu via B4 Relay wrote:
> From: Hermes Wu <Hermes.wu@xxxxxxxxxx>
> 
> Document the devicetree binding for the ITE IT6625/IT6626 HDMI to
> MIPI CSI-2 bridge. The device exposes three graph ports: port@0
> (MIPI0) and port@1 (MIPI1) are the two selectable CSI-2 D-PHY/C-PHY
> outputs, and port@2 is the HDMI connector input. Only port@0 is
> required, since a board only needs to wire up as many of the bridge's
> outputs as it actually uses.
> 
> Signed-off-by: Hermes Wu <Hermes.wu@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/media/i2c/ite,it6625.yaml  | 136 +++++++++++++++++++++
>  1 file changed, 136 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/ite,it6625.yaml b/Documentation/devicetree/bindings/media/i2c/ite,it6625.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..102af5dcb380b0ad2462c376e5a87b22d7296f14
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/ite,it6625.yaml
> @@ -0,0 +1,136 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/ite,it6625.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ITE IT6625/IT6626 HDMI to dual MIPI CSI-2 bridge
> +
> +maintainers:
> +  - Hermes Wu <Hermes.wu@xxxxxxxxxx>
> +
> +description: |-
> +  The ITE IT6625 and IT6626 are HDMI to MIPI CSI-2 bridge devices.
> +  IT6625 supports an HDMI 2.0 input and converts it to one or two D-PHY CSI
> +  outputs, while IT6626 supports an HDMI 2.1 input and converts it to one or
> +  two C/D-PHY CSI outputs. The bridges are programmable through I2C and
> +  expose one HDMI input port and two selectable CSI-2 output ports. The
> +  bridge can operate in split mode or clone mode.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ite,it6625
> +      - ite,it6626
> +
> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    description:
> +      GPIO connected to the active-low reset line.
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: CSI-2 output port MIPI0
> +
> +        properties:
> +          endpoint:
> +            $ref: /schemas/media/video-interfaces.yaml#
> +            unevaluatedProperties: false
> +
> +            properties:
> +              data-lanes:
> +                minItems: 1
> +                maxItems: 4
> +
> +              bus-type:
> +                enum:
> +                  - 1 # MEDIA_BUS_TYPE_CSI2_CPHY
> +                  - 4 # MEDIA_BUS_TYPE_CSI2_DPHY

If bus-type isn't required, a default need to be specified.

> +
> +              clock-noncontinuous: true
> +              link-frequencies: true
> +
> +            required:
> +              - data-lanes
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: CSI-2 output port MIPI1
> +
> +        properties:
> +          endpoint:
> +            $ref: /schemas/media/video-interfaces.yaml#
> +            unevaluatedProperties: false
> +
> +            properties:
> +              data-lanes:
> +                minItems: 1
> +                maxItems: 4
> +
> +              bus-type:
> +                enum:
> +                  - 1 # MEDIA_BUS_TYPE_CSI2_CPHY
> +                  - 4 # MEDIA_BUS_TYPE_CSI2_DPHY

Ditto.

> +
> +              clock-noncontinuous: true
> +              link-frequencies: true
> +
> +            required:
> +              - data-lanes
> +
> +      port@2:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: HDMI connector input port
> +
> +        properties:
> +          endpoint:
> +            $ref: /schemas/graph.yaml#/$defs/endpoint-base
> +            unevaluatedProperties: false
> +
> +    required:
> +      - port@0
> +required:
> +  - compatible
> +  - reg
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      hdmi-bridge@4c {
> +        compatible = "ite,it6625";
> +        reg = <0x4c>;
> +
> +        reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
> +
> +        ports {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          port@0 {
> +            reg = <0>;
> +            csi_out0: endpoint {
> +              remote-endpoint = <&csi2_rx0>;
> +              bus-type = <4>; /* MEDIA_BUS_TYPE_CSI2_DPHY */
> +              data-lanes = <1 2 3 4>;
> +            };
> +          };
> +        };
> +      };
> +    };
> 

-- 
Regards,

Sakari Ailus