Re: [PATCH 1/4] dt-bindings: usb: typec: add bindings for stm32g0 controller

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

On 24/06/2022 17:54, Fabrice Gasnier wrote:
> This patch adds DT schema documentation for the STM32G0 Type-C controller.

No "This patch"

https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

> STM32G0 provides an integrated USB Type-C and power delivery interface.
> It can be programmed with a firmware to handle UCSI protocol over I2C
> interface. A GPIO is used as an interrupt line.
> It may be used as a wakeup source, so use optional "wakeup-source" and
> "power-domains" properties to support wakeup.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
> ---
>  .../bindings/usb/st,typec-stm32g0.yaml        | 83 +++++++++++++++++++
>  1 file changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/st,typec-stm32g0.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/st,typec-stm32g0.yaml b/Documentation/devicetree/bindings/usb/st,typec-stm32g0.yaml
> new file mode 100644
> index 0000000000000..b2729bd015a1a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/st,typec-stm32g0.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/usb/st,typec-stm32g0.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"

No quotes.

> +
> +title: STMicroelectronics STM32G0 Type-C controller bindings

s/bindings//

> +
> +description: |
> +  The STM32G0 MCU can be programmed to control Type-C connector(s) through I2C
> +  typically using the UCSI protocol over I2C, with a dedicated alert
> +  (interrupt) pin.
> +
> +maintainers:
> +  - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
> +
> +properties:
> +  compatible:
> +    const: st,stm32g0-typec
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  connector:
> +    type: object> +    allOf:
> +      - $ref: ../connector/usb-connector.yaml#

Full path, so /schemas/connector/...

unevaluatedProperties: false

> +
> +  firmware-name:
> +    description: |
> +      Should contain the name of the default firmware image
> +      file located on the firmware search path
> +
> +  wakeup-source: true
> +  power-domains: true

maxItems

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c5 {

Just "i2c"

> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      stm32g0@53 {

Generic node name describing class of the device.

> +        compatible = "st,stm32g0-typec";
> +        reg = <0x53>;
> +        /* Alert pin on GPIO PE12 */
> +        interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
> +        interrupt-parent = <&gpioe>;
> +
> +        /* Example with one type-C connector */
> +        connector {
> +          compatible = "usb-c-connector";
> +          label = "USB-C";
> +
> +          port {

This does not look like proper schema of connector.yaml.

> +            con_usb_c_ep: endpoint {
> +              remote-endpoint = <&usbotg_hs_ep>;
> +            };
> +          };
> +        };
> +      };
> +    };
> +
> +    usbotg_hs {

Generic node names, no underscores in node names.

> +      usb-role-switch;
> +      port {
> +        usbotg_hs_ep: endpoint {
> +          remote-endpoint = <&con_usb_c_ep>;
> +        };
> +      };
> +    };
> +...


Best regards,
Krzysztof