linux-kernel - Re: [PATCH 3/8] dt-bindings: pinctrl: Convert ingenic,pinctrl.txt to YAML

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Message-ID: <20200511224747.GA19685@bogus>
Date:   Mon, 11 May 2020 17:47:47 -0500
From:   Rob Herring <robh@...nel.org>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     od@...c.me, 周琰杰 <zhouyanjie@...yeetech.com>,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-i2c@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-gpio@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-mips@...r.kernel.org
Subject: Re: [PATCH 3/8] dt-bindings: pinctrl: Convert ingenic,pinctrl.txt to
 YAML

On Sun, Apr 26, 2020 at 08:58:51PM +0200, Paul Cercueil wrote:
> Convert the ingenic,pinctrl.txt doc file to ingenic,pinctrl.yaml.
> 
> In the process, some compatible strings now require a fallback, as the
> corresponding SoCs are pin-compatible with their fallback variant.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> ---
>  .../bindings/pinctrl/ingenic,pinctrl.txt      |  81 ----------
>  .../bindings/pinctrl/ingenic,pinctrl.yaml     | 138 ++++++++++++++++++
>  2 files changed, 138 insertions(+), 81 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.yaml


> diff --git a/Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.yaml
> new file mode 100644
> index 000000000000..adf462cc2737
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.yaml
> @@ -0,0 +1,138 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/ingenic,pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Ingenic SoCs pin controller devicetree bindings
> +
> +description: >
> +  Please refer to pinctrl-bindings.txt in this directory for details of the
> +  common pinctrl bindings used by client devices, including the meaning of the
> +  phrase "pin configuration node".
> +
> +  For the Ingenic SoCs, pin control is tightly bound with GPIO ports. All pins
> +  may be used as GPIOs, multiplexed device functions are configured within the
> +  GPIO port configuration registers and it is typical to refer to pins using the
> +  naming scheme "PxN" where x is a character identifying the GPIO port with
> +  which the pin is associated and N is an integer from 0 to 31 identifying the
> +  pin within that GPIO port. For example PA0 is the first pin in GPIO port A,
> +  and PB31 is the last pin in GPIO port B. The JZ4740, the X1000 and the X1830
> +  contains 4 GPIO ports, PA to PD, for a total of 128 pins. The JZ4760, the
> +  JZ4770 and the JZ4780 contains 6 GPIO ports, PA to PF, for a total of 192
> +  pins.
> +
> +maintainers:
> +  - Paul Cercueil <paul@...pouillou.net>
> +
> +properties:
> +  nodename:
> +    pattern: "^pin-controller@[0-9a-f]+$"

That would have been more consistent, but 'pinctrl@...' is the standard.

> +
> +  compatible:
> +    oneOf:
> +      - enum:
> +        - ingenic,jz4740-pinctrl
> +        - ingenic,jz4725b-pinctrl
> +        - ingenic,jz4760-pinctrl
> +        - ingenic,jz4770-pinctrl
> +        - ingenic,jz4780-pinctrl
> +        - ingenic,x1000-pinctrl
> +        - ingenic,x1500-pinctrl
> +        - ingenic,x1830-pinctrl
> +      - items:
> +        - const: ingenic,jz4760b-pinctrl
> +        - const: ingenic,jz4760-pinctrl
> +      - items:
> +        - const: ingenic,x1000e-pinctrl
> +        - const: ingenic,x1000-pinctrl
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +patternProperties:
> +  "^gpio@[0-9]$":
> +    type: object
> +    properties:
> +      compatible:
> +        enum:
> +          - ingenic,jz4740-gpio
> +          - ingenic,jz4725b-gpio
> +          - ingenic,jz4760-gpio
> +          - ingenic,jz4770-gpio
> +          - ingenic,jz4780-gpio
> +          - ingenic,x1000-gpio
> +          - ingenic,x1500-gpio
> +          - ingenic,x1830-gpio
> +
> +      reg:
> +        items:
> +          - description: The GPIO bank number
> +
> +      gpio-controller: true
> +
> +      "#gpio-cells":
> +        const: 2
> +
> +      gpio-ranges:
> +        maxItems: 1
> +
> +      interrupt-controller: true
> +
> +      "#interrupt-cells":
> +        const: 2
> +        description:
> +          Refer to ../interrupt-controller/interrupts.txt for more details.
> +
> +      interrupts:
> +        maxItems: 1
> +
> +    required:
> +      - compatible
> +      - reg
> +      - gpio-controller
> +      - "#gpio-cells"
> +      - interrupts
> +      - interrupt-controller
> +      - "#interrupt-cells"
> +
> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#address-cells"
> +  - "#size-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    pin-controller@...10000 {
> +      compatible = "ingenic,jz4770-pinctrl";
> +      reg = <0x10010000 0x600>;
> +
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      gpio@0 {
> +        compatible = "ingenic,jz4770-gpio";
> +        reg = <0>;
> +
> +        gpio-controller;
> +        gpio-ranges = <&pinctrl 0 0 32>;
> +        #gpio-cells = <2>;
> +
> +        interrupt-controller;
> +        #interrupt-cells = <2>;
> +
> +        interrupt-parent = <&intc>;
> +        interrupts = <17>;
> +      };
> +    };

What about pinctrl child nodes?
 
> -- 
> 2.26.2
>