linux-kernel - Re: [PATCH] dt-bindings: usb: Add binding for ti,tps25750

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Message-ID: <eba26f0e-40dd-3661-b089-bc34c9426000@linaro.org>
Date:   Fri, 18 Aug 2023 11:31:35 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Abdel Alkuor <alkuor@...il.com>, devicetree@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Abdel Alkuor <abdelalkuor@...tab.com>
Subject: Re: [PATCH] dt-bindings: usb: Add binding for ti,tps25750

On 18/08/2023 01:52, Abdel Alkuor wrote:
> From: Abdel Alkuor <abdelalkuor@...tab.com>
> 
> TPS25750 provides power negotiation and capabilities management
> for USB Type-C applications.
> 
> Signed-off-by: Abdel Alkuor <abdelalkuor@...tab.com>

Where is any user of it? DTS, driver or 3rd party upstream open-source
project?


A nit, subject: drop second/last, redundant "binding for". The
"dt-bindings" prefix is already stating that these are bindings.

> ---
>  .../devicetree/bindings/usb/ti,tps25750.yaml  | 84 +++++++++++++++++++
>  1 file changed, 84 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/ti,tps25750.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/ti,tps25750.yaml b/Documentation/devicetree/bindings/usb/ti,tps25750.yaml
> new file mode 100644
> index 000000000000..326c9c2f766b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/ti,tps25750.yaml
> @@ -0,0 +1,84 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/ti,tps25750.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments 25750 Type-C Port Switch and Power Delivery controller
> +
> +maintainers:
> +  - Abdel Alkuor <abdelalkuor@...tab.com>
> +
> +description: |
> +  Texas Instruments 25750 Type-C Port Switch and Power Delivery controller
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,tps25750

Blank line

> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description: |

Drop description

> +    maxItems: 1
> +
> +  interrupt-names:
> +    items:
> +      - const: irq

Drop interrupt-names, it is useless in this form.

> +
> +  firmware-name:
> +    description: |
> +      Should contain the name of the default patch binary
> +      file located on the firmware search path which is
> +      used to switch the controller into APP mode

maxItems: 1

> +
> +  connector:
> +    type: object
> +    $ref: ../connector/usb-connector.yaml#
> +    description:
> +      Properties for usb c connector.
> +    required:
> +      - data-role
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - connector
> +
> +additionalProperties: true
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        tps25750: tps25750@21 {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation


> +            compatible = "ti,tps25750";
> +            reg = <0x21>;
> +


Best regards,
Krzysztof