linux-kernel - Re: [PATCH 1/2] dt-bindings: power: supply: Add Lenovo Yoga C630 EC

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Date:   Wed, 10 Aug 2022 16:35:39 +0300
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: power: supply: Add Lenovo Yoga C630 EC

On 10/08/2022 06:04, Bjorn Andersson wrote:
> Add binding for the Embedded Controller found in the Qualcomm
> Snapdragon-based Lenovo Yoga C630.

Thank you for your patch. There is something to discuss/improve.

> +
> +description:
> +  The Qualcomm Snapdragon-based Lenovo Yoga C630 has an Embedded Controller
> +  (EC) which handles things such as battery and USB Type-C. This binding
> +  describes the interface, on an I2C bus, to this EC.
> +
> +properties:
> +  compatible:
> +    const: lenovo,yoga-c630-ec
> +
> +  reg:
> +    const: 0x70
> +
> +  '#address-cells':
> +    const: 1

Just to clarify: the EC have physically two USB connectors?

> +
> +  '#size-cells':
> +    const: 0
> +
> +  interrupts:
> +    maxItems: 1
> +
> +patternProperties:
> +  '^connector@\d$':
> +    $ref: /schemas/connector/usb-connector.yaml#

unevaluatedProperties:false inside connector (on its level)

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |+
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c1 {
> +      clock-frequency = <400000>;
> +
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      embedded-controller@70 {
> +        compatible = "lenovo,yoga-c630-ec";
> +        reg = <0x70>;
> +
> +        interrupts-extended = <&tlmm 20 IRQ_TYPE_LEVEL_HIGH>;
> +
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        connector@0 {
> +          compatible = "usb-c-connector";
> +          reg = <0>;
> +          power-role = "source";
> +          data-role = "host";
> +        };
> +
> +        connector@1 {
> +          compatible = "usb-c-connector";
> +          reg = <1>;
> +          power-role = "source";
> +          data-role = "host";
> +
> +          ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +            port@1 {
> +              reg = <1>;
> +              lenovo_ec_dp_in: endpoint {
> +                   remote-endpoint = <&mdss_dp_out>;

You have inconsistent indentation. Use 4-spaces for entire DTS example.

Best regards,
Krzysztof