Re: [PATCH V6 1/6] dt-bindings: usb: Add Cypress cypd4226 Type-C controller

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 19/01/2023 13:16, Jon Hunter wrote:
> From: Wayne Chang <waynec@nvidia.com>
> 
> Add the device-tree binding documentation for Cypress cypd4226 dual
> Type-C controller.
> 
> Signed-off-by: Wayne Chang <waynec@nvidia.com>
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
> V5 -> V6: no changes
> V4 -> V5: updated subject and updated binding to use 'firmware-name'.
> V3 -> V4: no changes
> V2 -> V3: fix additionalProperties warning on new schema
> V1 -> V2: based on the review comments. Fix some addressed issues on
> 
>  .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> new file mode 100644
> index 000000000000..5d87c9f09913
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cypress cypd4226 Type-C Controller
> +
> +maintainers:
> +  - Wayne Chang <waynec@nvidia.com>
> +
> +description:
> +  The Cypress cypd4226 is a dual Type-C controller that is controlled
> +  via an I2C interface.
> +
> +properties:
> +  compatible:
> +    const: cypress,cypd4226
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +  reg:
> +    const: 0x08
> +
> +  interrupts:
> +    items:
> +      - description: cypd4226 host interrupt
> +
> +  firmware-name:
> +    enum:
> +      - nvidia,gpu
> +      - nvidia,jetson-agx-xavier
> +    description: |
> +      The name of the CCGx firmware built for product series.
> +      should be set one of following:
> +      - "nvidia,gpu" for the NVIDIA RTX product series
> +      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series
> +
> +patternProperties:
> +  '^connector@[0-1]+$':
> +    $ref: /schemas/connector/usb-connector.yaml#

On this level:
unevaluatedProperties: false

> +    properties:
> +      reg:
> +        maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/tegra194-gpio.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      #interrupt-cells = <2>;

Drop, does not look like relevant or used here.

> +
> +      ucsi-ccg@8 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +        compatible = "cypress,cypd4226";
> +        reg = <0x08>;
> +        interrupt-parent = <&gpio_aon>;
> +        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
> +        firmware-name = "nvidia,jetson-agx-xavier";
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        ccg_typec_con0: connector@0 {
> +          compatible = "usb-c-connector";
> +          reg = <0>;
> +          label = "USB-C";
> +          data-role = "dual";
> +          port {
> +            ucsi_ccg_p0: endpoint {
> +              remote-endpoint = <&usb_role_switch0>;
> +            };
> +          };
> +        };
> +      };
> +    };

Best regards,
Krzysztof