linux-kernel - Re: [PATCH 1/2] dt-bindings: ptp: Add IDT 82P33 based PTP clock

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Date:   Thu, 6 Feb 2020 17:48:26 +0000
From:   Rob Herring <robh@...nel.org>
To:     min.li.xe@...esas.com
Cc:     mark.rutland@....com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: ptp: Add IDT 82P33 based PTP clock

On Wed, Jan 29, 2020 at 02:34:31PM -0500, min.li.xe@...esas.com wrote:
> From: Min Li <min.li.xe@...esas.com>
> 
> Add device tree binding doc for the PTP clock based on IDT 82P33
> Synchronization Management Unit (SMU).
> 
> Signed-off-by: Min Li <min.li.xe@...esas.com>
> ---
>  .../devicetree/bindings/ptp/ptp-idt82p33.yaml      | 47 ++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml
> 
> diff --git a/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml b/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml
> new file mode 100644
> index 0000000..11d1b40
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml
> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ptp/ptp-idt82p33.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: IDT 82P33 PTP Clock Device Tree Bindings
> +
> +description: |
> +  IDT 82P33XXX Synchronization Management Unit (SMU) based PTP clock
> +
> +maintainers:
> +  - Min Li <min.li.xe@...esas.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - idt,82p33810
> +      - idt,82p33813
> +      - idt,82p33814
> +      - idt,82p33831
> +      - idt,82p33910
> +      - idt,82p33913
> +      - idt,82p33914
> +      - idt,82p33931
> +
> +  reg:
> +    maxItems: 1
> +    description:
> +      I2C slave address of the device.

Can drop the description. That's every device.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    i2c@1 {
> +        compatible = "abc,acme-1234";
> +        reg = <0x01 0x400>;

Just do:

i2c {

Eventually undocumented compatibles are going to throw warnings.

> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        phc@51 {
> +            compatible = "idt,82p33810";
> +            reg = <0x51>;
> +        };
> +    };
> -- 
> 2.7.4
>