Re: [PATCH 1/3] dt-bindings: display: ti,tpd12s015: Convert to DT schema

[Conor Dooley <conor@kernel.org>]

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On Fri, Oct 09, 2026 at 06:55:59PM +0800, Quchaosheng wrote:
> From: Chaosheng Qu <quchaosheng000406@163.com>
> 
> Convert the TPD12S015 HDMI level shifter binding to DT schema.
> 
> The TI TPD12S015 is an HDMI companion chip that combines a level shifter
> and ESD protection circuitry. Document the two ports it exposes between
> the HDMI transmitter and the connector.
> 
> The tpd12s016 is software compatible with the tpd12s015 and is listed as
> a fallback compatible by am57xx-idk-common.dtsi, so accept it as a
> fallback of "ti,tpd12s015". The driver matches on "ti,tpd12s015" only, so
> a board using the tpd12s016 must list both compatibles.
> 
> Assisted-by: LLM
> Signed-off-by: Chaosheng Qu <quchaosheng000406@163.com>

No idea if the sashiko reply is valid, because I have no clue if
providing a subset of the gpios is functional. Really this should have
multiple different gpios properties, but this binding is really old and
not worth changing IMO.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

> ---
>  .../bindings/display/ti/ti,tpd12s015.txt      | 44 ---------
>  .../bindings/display/ti/ti,tpd12s015.yaml     | 90 +++++++++++++++++++
>  2 files changed, 90 insertions(+), 44 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/display/ti/ti,tpd12s015.txt
>  create mode 100644 Documentation/devicetree/bindings/display/ti/ti,tpd12s015.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.txt b/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.txt
> deleted file mode 100644
> index 26e6d32e3f20..000000000000
> --- a/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.txt
> +++ /dev/null
> @@ -1,44 +0,0 @@
> -TPD12S015 HDMI level shifter and ESD protection chip
> -====================================================
> -
> -Required properties:
> -- compatible: "ti,tpd12s015"
> -
> -Optional properties:
> -- gpios: CT CP HPD, LS OE and HPD gpios
> -
> -Required nodes:
> -- Video port 0 for HDMI input
> -- Video port 1 for HDMI output
> -
> -Example
> --------
> -
> -tpd12s015: encoder@1 {
> -	compatible = "ti,tpd12s015";
> -
> -	gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>,	/* 60, CT CP HPD */
> -		<&gpio2 9 GPIO_ACTIVE_HIGH>,	/* 41, LS OE */
> -		<&gpio2 31 GPIO_ACTIVE_HIGH>;	/* 63, HPD */
> -
> -	ports {
> -		#address-cells = <1>;
> -		#size-cells = <0>;
> -
> -		port@0 {
> -			reg = <0>;
> -
> -			tpd12s015_in: endpoint@0 {
> -				remote-endpoint = <&hdmi_out>;
> -			};
> -		};
> -
> -		port@1 {
> -			reg = <1>;
> -
> -			tpd12s015_out: endpoint@0 {
> -				remote-endpoint = <&hdmi_connector_in>;
> -			};
> -		};
> -	};
> -};
> diff --git a/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.yaml b/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.yaml
> new file mode 100644
> index 000000000000..1927da3bd736
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/ti/ti,tpd12s015.yaml
> @@ -0,0 +1,90 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/ti/ti,tpd12s015.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TI TPD12S015 HDMI level shifter and ESD protection chip
> +
> +maintainers:
> +  - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> +
> +description: |
> +  The TPD12S015 is an HDMI companion chip that combines a level shifter and
> +  ESD protection circuitry. It sits between an HDMI transmitter and the HDMI
> +  connector, and provides control over the level shifter enable and the
> +  hot-plug detect signals.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: ti,tpd12s015
> +      - items:
> +          - const: ti,tpd12s016
> +          - const: ti,tpd12s015
> +
> +  gpios:
> +    description:
> +      The CT CP HPD, LS OE and HPD GPIOs, in that order. The first controls
> +      the level shifter, the second enables the level shifter outputs and
> +      the third reads the hot-plug detect line.
> +    maxItems: 3
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: HDMI input from the transmitter.
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/$defs/port-base
> +        unevaluatedProperties: false
> +        description: HDMI output to the connector.
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    encoder1 {
> +        compatible = "ti,tpd12s015";
> +
> +        gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>,    /* 60, CT CP HPD */
> +                <&gpio2 9 GPIO_ACTIVE_HIGH>,    /* 41, LS OE */
> +                <&gpio2 31 GPIO_ACTIVE_HIGH>;    /* 63, HPD */
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +
> +                tpd12s015_in: endpoint {
> +                    remote-endpoint = <&hdmi_out>;
> +                };
> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +
> +                tpd12s015_out: endpoint {
> +                    remote-endpoint = <&hdmi_connector_in>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> -- 
> 2.43.0
> 

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