Re: [PATCH v7 1/7] dt-bindings: display: imx: add HDMI PAI for i.MX8MP

[Liu Ying <victor.liu@nxp.com>]

Hi Sima,

On 10/21/2025, Simona Vetter wrote:
> On Tue, Sep 23, 2025 at 01:29:55PM +0800, Shengjiu Wang wrote:
>> Add binding for the i.MX8MP HDMI parallel Audio interface block.
>>
>> The HDMI TX Parallel Audio Interface (HTX_PAI) is a digital module that
>> acts as the bridge between the Audio Subsystem to the HDMI TX Controller.
>> This IP block is found in the HDMI subsystem of the i.MX8MP SoC.
>>
>> Aud2htx module in Audio Subsystem, HDMI PAI module and HDMI TX
>> Controller compose the HDMI audio pipeline.
>>
>> In fsl,imx8mp-hdmi-tx.yaml, add port@2 that is linked to pai_to_hdmi_tx.
>>
>> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>> Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
> 
> dt patches need an ack from dt maintainers before you push them, please
> make sure you follow that for the next changes.

Just want to make sure I may follow that correctly in the future.
As Krzysztof is one of DT binding maintainers and this patch has
Krzysztof's R-b tag, need more ack from DT maintainers?

> -Sima
> 
>> ---
>>  .../display/bridge/fsl,imx8mp-hdmi-tx.yaml    | 12 ++++
>>  .../display/imx/fsl,imx8mp-hdmi-pai.yaml      | 69 +++++++++++++++++++
>>  2 files changed, 81 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pai.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,imx8mp-hdmi-tx.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,imx8mp-hdmi-tx.yaml
>> index 05442d437755..6211ab8bbb0e 100644
>> --- a/Documentation/devicetree/bindings/display/bridge/fsl,imx8mp-hdmi-tx.yaml
>> +++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8mp-hdmi-tx.yaml
>> @@ -49,6 +49,10 @@ properties:
>>          $ref: /schemas/graph.yaml#/properties/port
>>          description: HDMI output port
>>  
>> +      port@2:
>> +        $ref: /schemas/graph.yaml#/properties/port
>> +        description: Parallel audio input port
>> +
>>      required:
>>        - port@0
>>        - port@1
>> @@ -98,5 +102,13 @@ examples:
>>                      remote-endpoint = <&hdmi0_con>;
>>                  };
>>              };
>> +
>> +            port@2 {
>> +                reg = <2>;
>> +
>> +                endpoint {
>> +                    remote-endpoint = <&pai_to_hdmi_tx>;
>> +                };
>> +            };
>>          };
>>      };
>> diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pai.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pai.yaml
>> new file mode 100644
>> index 000000000000..4f99682a308d
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8mp-hdmi-pai.yaml
>> @@ -0,0 +1,69 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/display/imx/fsl,imx8mp-hdmi-pai.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Freescale i.MX8MP HDMI Parallel Audio Interface
>> +
>> +maintainers:
>> +  - Shengjiu Wang <shengjiu.wang@nxp.com>
>> +
>> +description:
>> +  The HDMI TX Parallel Audio Interface (HTX_PAI) is a bridge between the
>> +  Audio Subsystem to the HDMI TX Controller.
>> +
>> +properties:
>> +  compatible:
>> +    const: fsl,imx8mp-hdmi-pai
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    const: apb
>> +
>> +  power-domains:
>> +    maxItems: 1
>> +
>> +  port:
>> +    $ref: /schemas/graph.yaml#/properties/port
>> +    description: Output to the HDMI TX controller.
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - clocks
>> +  - clock-names
>> +  - power-domains
>> +  - port
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/imx8mp-clock.h>
>> +    #include <dt-bindings/power/imx8mp-power.h>
>> +
>> +    audio-bridge@32fc4800 {
>> +        compatible = "fsl,imx8mp-hdmi-pai";
>> +        reg = <0x32fc4800 0x800>;
>> +        interrupt-parent = <&irqsteer_hdmi>;
>> +        interrupts = <14>;
>> +        clocks = <&clk IMX8MP_CLK_HDMI_APB>;
>> +        clock-names = "apb";
>> +        power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PAI>;
>> +
>> +        port {
>> +            pai_to_hdmi_tx: endpoint {
>> +                remote-endpoint = <&hdmi_tx_from_pai>;
>> +            };
>> +        };
>> +    };
>> -- 
>> 2.34.1
>>
> 


-- 
Regards,
Liu Ying