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Date:   Wed, 14 Jul 2021 12:59:22 -0600
From:   Rob Herring <robh@kernel.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Keiji Hayashibara <hayashibara.keiji@socionext.com>
Subject: Re: [PATCH] dt-bindings: nvmem: Convert UniPhier eFuse bindings to
 json-schema
Message-ID: <20210714185922.GA2857803@robh.at.kernel.org>
References: <1624413058-17338-1-git-send-email-hayashi.kunihiko@socionext.com>
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On Wed, Jun 23, 2021 at 10:50:58AM +0900, Kunihiko Hayashi wrote:
> Convert the UniPhier eFuse binding to DT schema format.
> 
> Cc: Keiji Hayashibara <hayashibara.keiji@socionext.com>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
> ---
>  .../bindings/nvmem/socionext,uniphier-efuse.yaml   | 109 +++++++++++++++++++++
>  .../devicetree/bindings/nvmem/uniphier-efuse.txt   |  49 ---------
>  2 files changed, 109 insertions(+), 49 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
>  delete mode 100644 Documentation/devicetree/bindings/nvmem/uniphier-efuse.txt
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml b/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
> new file mode 100644
> index 0000000..e03c1ed
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
> @@ -0,0 +1,109 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/socionext,uniphier-efuse.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Socionext UniPhier eFuse bindings
> +
> +maintainers:
> +  - Keiji Hayashibara <hayashibara.keiji@socionext.com>
> +  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
> +
> +allOf:
> +  - $ref: "nvmem.yaml#"
> +
> +properties:
> +  "#address-cells": true
> +  "#size-cells": true
> +
> +  compatible:
> +    const: socionext,uniphier-efuse
> +
> +  reg:
> +    maxItems: 1
> +
> +patternProperties:
> +  "^.*@[0-9a-f]+,[0-9]+$":

nvmem.yaml has a different definition. Though it doesn't handle 
overlapping addresses. You should extend nvmem.yaml like you have here. 
The last part should be optional though.

> +    type: object
> +
> +    properties:
> +      reg:
> +        maxItems: 1
> +
> +      bits:
> +        maxItems: 1
> +
> +    required:
> +      - reg

All this is already defined in nvmem.yaml.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false

Use 'unevaluatedProperties: false' and then you don't need to redefine 
anything common here.

> +
> +examples:
> +  - |
> +    // The UniPhier eFuse should be a subnode of a "soc-glue" node.
> +
> +    soc-glue@5f900000 {
> +        compatible = "simple-mfd";
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        ranges = <0x0 0x5f900000 0x2000>;
> +
> +        efuse@100 {
> +            compatible = "socionext,uniphier-efuse";
> +            reg = <0x100 0x28>;
> +        };
> +
> +        efuse@200 {
> +            compatible = "socionext,uniphier-efuse";
> +            reg = <0x200 0x68>;
> +            #address-cells = <1>;
> +            #size-cells = <1>;
> +
> +            /* Data cells */
> +            usb_rterm0: trim@54,4 {
> +                reg = <0x54 1>;
> +                bits = <4 2>;
> +            };
> +            usb_rterm1: trim@55,4 {
> +                reg = <0x55 1>;
> +                bits = <4 2>;
> +            };
> +            usb_rterm2: trim@58,4 {
> +                reg = <0x58 1>;
> +                bits = <4 2>;
> +            };
> +            usb_rterm3: trim@59,4 {
> +                reg = <0x59 1>;
> +                bits = <4 2>;
> +            };
> +            usb_sel_t0: trim@54,0 {
> +                reg = <0x54 1>;
> +                bits = <0 4>;
> +            };
> +            usb_sel_t1: trim@55,0 {
> +                reg = <0x55 1>;
> +                bits = <0 4>;
> +            };
> +            usb_sel_t2: trim@58,0 {
> +                reg = <0x58 1>;
> +                bits = <0 4>;
> +            };
> +            usb_sel_t3: trim@59,0 {
> +                reg = <0x59 1>;
> +                bits = <0 4>;
> +            };
> +            usb_hs_i0: trim@56,0 {
> +                reg = <0x56 1>;
> +                bits = <0 4>;
> +            };
> +            usb_hs_i2: trim@5a,0 {
> +                reg = <0x5a 1>;
> +                bits = <0 4>;
> +            };
> +        };
> +    };
> diff --git a/Documentation/devicetree/bindings/nvmem/uniphier-efuse.txt b/Documentation/devicetree/bindings/nvmem/uniphier-efuse.txt
> deleted file mode 100644
> index eccf490..0000000
> --- a/Documentation/devicetree/bindings/nvmem/uniphier-efuse.txt
> +++ /dev/null
> @@ -1,49 +0,0 @@
> -= UniPhier eFuse device tree bindings =
> -
> -This UniPhier eFuse must be under soc-glue.
> -
> -Required properties:
> -- compatible: should be "socionext,uniphier-efuse"
> -- reg: should contain the register location and length
> -
> -= Data cells =
> -Are child nodes of efuse, bindings of which as described in
> -bindings/nvmem/nvmem.txt
> -
> -Example:
> -
> -	soc-glue@5f900000 {
> -		compatible = "socionext,uniphier-ld20-soc-glue-debug",
> -			     "simple-mfd";
> -		#address-cells = <1>;
> -		#size-cells = <1>;
> -		ranges = <0x0 0x5f900000 0x2000>;
> -
> -		efuse@100 {
> -			compatible = "socionext,uniphier-efuse";
> -			reg = <0x100 0x28>;
> -		};
> -
> -		efuse@200 {
> -			compatible = "socionext,uniphier-efuse";
> -			reg = <0x200 0x68>;
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -
> -			/* Data cells */
> -			usb_mon: usb-mon@54 {
> -				reg = <0x54 0xc>;
> -			};
> -		};
> -	};
> -
> -= Data consumers =
> -Are device nodes which consume nvmem data cells.
> -
> -Example:
> -
> -	usb {
> -		...
> -		nvmem-cells = <&usb_mon>;
> -		nvmem-cell-names = "usb_mon";
> -	}
> -- 
> 2.7.4
> 
>