linux-kernel - Re: [PATCHv1 1/2] dt-bindings: max3421-udc: add dt bindings for MAX3420 UDC

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Date:   Thu, 19 Dec 2019 13:40:00 -0600
From:   Rob Herring <robh@...nel.org>
To:     jassisinghbrar@...il.com
Cc:     balbi@...nel.org, gregkh@...uxfoundation.org, mark.rutland@....com,
        devicetree@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Jassi Brar <jaswinder.singh@...aro.org>
Subject: Re: [PATCHv1 1/2] dt-bindings: max3421-udc: add dt bindings for
 MAX3420 UDC

On Mon, Dec 09, 2019 at 06:31:24PM -0600, jassisinghbrar@...il.com wrote:
> From: Jassi Brar <jaswinder.singh@...aro.org>
> 
> Add YAML dt bindings for Maxim MAX3420 UDC controller.
> 
> Signed-off-by: Jassi Brar <jaswinder.singh@...aro.org>
> ---
>  .../bindings/usb/maxim,max3420-udc.yaml       | 60 +++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/maxim,max3420-udc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/maxim,max3420-udc.yaml b/Documentation/devicetree/bindings/usb/maxim,max3420-udc.yaml
> new file mode 100644
> index 000000000000..cf4eec8a618e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/maxim,max3420-udc.yaml
> @@ -0,0 +1,60 @@
> +# SPDX-License-Identifier: GPL-2.0-only

Dual license new bindings please:

(GPL-2.0-only OR BSD-2-Clause)

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/maxim,max3420-udc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MAXIM MAX3420/1 USB Peripheral Controller
> +
> +maintainers:
> +  - Jassi Brar <jaswinder.singh@...aro.org>
> +
> +description: |
> +  The controller provices USB2.0 compliant FullSpeed peripheral
> +  implementation over the  SPI interface.

space                        ^

> +
> +  Specifications about the part can be found at:
> +    http://datasheets.maximintegrated.com/en/ds/MAX3420E.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - maxim,max3420-udc
> +      - maxim,max3421-udc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    minItems: 1
> +    maxItems: 2
> +    items:
> +      - const: udc
> +      - const: vbus

interrupts are integers, not strings. Should be interrupt-names?

> +
> +  spi-max-frequency:
> +    maximum: 26000000
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-names

Add:

additionalProperties: false

> +
> +examples:
> +  - |
> +      #include <dt-bindings/gpio/gpio.h>
> +      #include <dt-bindings/interrupt-controller/irq.h>
> +      spi0 {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            udc@0 {
> +                  compatible = "maxim,max3420-udc";
> +                  reg = <0>;
> +                  interrupt-parent = <&gpio>;
> +                  interrupts = <0 IRQ_TYPE_EDGE_FALLING>, <10 IRQ_TYPE_EDGE_BOTH>;
> +                  interrupt-names = "udc", "vbus";
> +                  spi-max-frequency = <12500000>;
> +            };
> +      };
> -- 
> 2.20.1
>