linux-kernel - Re: [PATCH v3 21/21] dt-bindings: arm: hisilicon: convert LPC controller bindings to json-schema

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Message-ID: <20200928105258.000016c5@Huawei.com>
Date:   Mon, 28 Sep 2020 10:52:58 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Zhen Lei <thunder.leizhen@...wei.com>
CC:     Wei Xu <xuwei5@...ilicon.com>, Rob Herring <robh+dt@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Libin <huawei.libin@...wei.com>
Subject: Re: [PATCH v3 21/21] dt-bindings: arm: hisilicon: convert LPC
 controller bindings to json-schema

On Sun, 27 Sep 2020 14:21:29 +0800
Zhen Lei <thunder.leizhen@...wei.com> wrote:

> Convert the Hisilicon Hip06 SoCs implement a Low Pin Count (LPC)
> controller binding to DT schema format using json-schema.
> 
> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>

As only single entries in the oneOf, can just use an enum.

Thanks,

Jonathan

> ---
>  .../arm/hisilicon/hisilicon-low-pin-count.txt      | 33 ------------
>  .../arm/hisilicon/hisilicon-low-pin-count.yaml     | 63 ++++++++++++++++++++++
>  2 files changed, 63 insertions(+), 33 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
>  create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
> deleted file mode 100644
> index 10bd35f9207f2ee..000000000000000
> --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt
> +++ /dev/null
> @@ -1,33 +0,0 @@
> -Hisilicon Hip06 Low Pin Count device
> -  Hisilicon Hip06 SoCs implement a Low Pin Count (LPC) controller, which
> -  provides I/O access to some legacy ISA devices.
> -  Hip06 is based on arm64 architecture where there is no I/O space. So, the
> -  I/O ports here are not CPU addresses, and there is no 'ranges' property in
> -  LPC device node.
> -
> -Required properties:
> -- compatible:  value should be as follows:
> -	(a) "hisilicon,hip06-lpc"
> -	(b) "hisilicon,hip07-lpc"
> -- #address-cells: must be 2 which stick to the ISA/EISA binding doc.
> -- #size-cells: must be 1 which stick to the ISA/EISA binding doc.
> -- reg: base memory range where the LPC register set is mapped.
> -
> -Note:
> -  The node name before '@' must be "isa" to represent the binding stick to the
> -  ISA/EISA binding specification.
> -
> -Example:
> -
> -isa@...b0000 {
> -	compatible = "hisilicon,hip06-lpc";
> -	#address-cells = <2>;
> -	#size-cells = <1>;
> -	reg = <0x0 0xa01b0000 0x0 0x1000>;
> -
> -	ipmi0: bt@e4 {
> -		compatible = "ipmi-bt";
> -		device_type = "ipmi";
> -		reg = <0x01 0xe4 0x04>;
> -	};
> -};
> diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
> new file mode 100644
> index 000000000000000..a43f8b65547c10f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/hisilicon/hisilicon-low-pin-count.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Hisilicon Hip06 Low Pin Count device
> +
> +maintainers:
> +  - Wei Xu <xuwei5@...ilicon.com>
> +
> +description: |
> +  Hisilicon Hip06 SoCs implement a Low Pin Count (LPC) controller, which
> +  provides I/O access to some legacy ISA devices.
> +  Hip06 is based on arm64 architecture where there is no I/O space. So, the
> +  I/O ports here are not CPU addresses, and there is no 'ranges' property in
> +  LPC device node.
> +
> +properties:
> +  $nodename:
> +    pattern: '^isa@[0-9a-f]+$'
> +    description: |
> +      The node name before '@' must be "isa" to represent the binding stick
> +      to the ISA/EISA binding specification.
> +
> +  compatible:
> +    oneOf:
> +      - items:
> +        - const: hisilicon,hip06-lpc
> +      - items:
> +        - const: hisilicon,hip07-lpc

       enum:
         - hisilicon,hip06-lpc
         - hisilicon,hip07-lpc

> +
> +  reg:
> +    description: base memory range where the LPC register set is mapped.
> +    maxItems: 1
> +
> +  '#address-cells':
> +    description: must be 2 which stick to the ISA/EISA binding doc.
> +    const: 2
> +
> +  '#size-cells':
> +    description: must be 1 which stick to the ISA/EISA binding doc.
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    isa@...b0000 {
> +        compatible = "hisilicon,hip06-lpc";
> +        #address-cells = <2>;
> +        #size-cells = <1>;
> +        reg = <0xa01b0000 0x1000>;
> +
> +        ipmi0: bt@e4 {
> +            compatible = "ipmi-bt";
> +            device_type = "ipmi";
> +            reg = <0x01 0xe4 0x04>;
> +        };
> +    };
> +...
> \ No newline at end of file