linux-kernel - Re: [next PATCH] dt-bindings: nvmem: convert mtk-efuse.txt to YAML schema

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Message-ID: <YboeNrekGcGOZES8@robh.at.kernel.org>
Date:   Wed, 15 Dec 2021 10:56:22 -0600
From:   Rob Herring <robh@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [next PATCH] dt-bindings: nvmem: convert mtk-efuse.txt to YAML
 schema

On Thu, Dec 09, 2021 at 10:42:13AM +0800, Chunfeng Yun wrote:
> Convert mtk-efuse.txt to YAML schema mediatek,efuse.yaml
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
>  .../bindings/nvmem/mediatek,efuse.yaml        | 89 +++++++++++++++++++
>  .../devicetree/bindings/nvmem/mtk-efuse.txt   | 43 ---------
>  2 files changed, 89 insertions(+), 43 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
>  delete mode 100644 Documentation/devicetree/bindings/nvmem/mtk-efuse.txt
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> new file mode 100644
> index 000000000000..7332195e7f00
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> @@ -0,0 +1,89 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/mediatek,efuse.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek efuse device tree bindings
> +
> +description: |
> +  MediaTek's efuse is used for storing calibration data, it can be accessed
> +  on ARM devices usiong I/O mapped memory.
> +
> +maintainers:
> +  - Andrew-CT Chen <andrew-ct.chen@...iatek.com>
> +
> +allOf:
> +  - $ref: "nvmem.yaml#"
> +
> +properties:
> +  $nodename:
> +    pattern: "^efuse@[0-9a-f]+$"
> +
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt7622-efuse
> +              - mediatek,mt7623-efuse
> +              - mediatek,mt8173-efuse
> +              - mediatek,mt8192-efuse
> +              - mediatek,mt8195-efuse
> +              - mediatek,mt8516-efuse
> +          - const: mediatek,efuse
> +      - const: mediatek,mt8173-efuse
> +        deprecated: true
> +
> +  reg:
> +    maxItems: 1
> +

All of: 

> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +patternProperties:
> +  "^.*@[0-9a-f]+$":
> +    type: object
> +
> +    properties:
> +      reg:
> +        maxItems: 1
> +
> +      bits:
> +        maxItems: 1
> +
> +    required:
> +      - reg
> +
> +    additionalProperties: false

...this is covered by nvmem.yaml and can be dropped.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    efuse@...06000 {
> +        compatible = "mediatek,mt8173-efuse";
> +        reg = <0x10206000 0x1000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        u2_intr_p0: usb2-intr-p0@188 {
> +            reg = <0x188 0x1>;
> +            bits = <0 5>;
> +        };
> +
> +        u2_intr_p1: usb2-intr-p1@188 {
> +            reg = <0x188 0x2>;
> +            bits = <5 5>;
> +        };
> +
> +        thermal_calibration: calib@528 {
> +            reg = <0x528 0xc>;
> +        };
> +    };
> diff --git a/Documentation/devicetree/bindings/nvmem/mtk-efuse.txt b/Documentation/devicetree/bindings/nvmem/mtk-efuse.txt
> deleted file mode 100644
> index 39d529599444..000000000000
> --- a/Documentation/devicetree/bindings/nvmem/mtk-efuse.txt
> +++ /dev/null
> @@ -1,43 +0,0 @@
> -= Mediatek MTK-EFUSE device tree bindings =
> -
> -This binding is intended to represent MTK-EFUSE which is found in most Mediatek SOCs.
> -
> -Required properties:
> -- compatible: should be
> -	      "mediatek,mt7622-efuse", "mediatek,efuse": for MT7622
> -	      "mediatek,mt7623-efuse", "mediatek,efuse": for MT7623
> -	      "mediatek,mt8173-efuse" or "mediatek,efuse": for MT8173
> -	      "mediatek,mt8192-efuse", "mediatek,efuse": for MT8192
> -	      "mediatek,mt8195-efuse", "mediatek,efuse": for MT8195
> -	      "mediatek,mt8516-efuse", "mediatek,efuse": for MT8516
> -- reg: Should contain registers location and length
> -- bits: contain the bits range by offset and size
> -
> -= Data cells =
> -Are child nodes of MTK-EFUSE, bindings of which as described in
> -bindings/nvmem/nvmem.txt
> -
> -Example:
> -
> -	efuse: efuse@...06000 {
> -		compatible = "mediatek,mt8173-efuse";
> -		reg	   = <0 0x10206000 0 0x1000>;
> -		#address-cells = <1>;
> -		#size-cells = <1>;
> -
> -		/* Data cells */
> -		thermal_calibration: calib@528 {
> -			reg = <0x528 0xc>;
> -		};
> -	};
> -
> -= Data consumers =
> -Are device nodes which consume nvmem data cells.
> -
> -For example:
> -
> -	thermal {
> -		...
> -		nvmem-cells = <&thermal_calibration>;
> -		nvmem-cell-names = "calibration";
> -	};
> -- 
> 2.18.0
> 
>