linux-kernel - Re: [RFC PATH 1/2] dt-bindings: gpio: add starfive,jh7100-gpio bindings

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Message-ID: <CAMuHMdWLNy6_CnFEYDvHSEdMYH=T_Fy=DCjZCF9kPGWcD-B0Qw@mail.gmail.com>
Date:   Thu, 1 Jul 2021 10:34:56 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Drew Fustini <drew@...gleboard.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Michael Zhu <michael.zhu@...rfivetech.com>,
        Fu Wei <tekkamanninja@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Huan Feng <huan.feng@...rfivetech.com>
Subject: Re: [RFC PATH 1/2] dt-bindings: gpio: add starfive,jh7100-gpio bindings

Hi Drew,

On Thu, Jul 1, 2021 at 2:22 AM Drew Fustini <drew@...gleboard.org> wrote:
> Add bindings for the GPIO controller in the StarFive JH7100 SoC [1].
>
> [1] https://github.com/starfive-tech/beaglev_doc
>
> Signed-off-by: Drew Fustini <drew@...gleboard.org>
> Signed-off-by: Huan Feng <huan.feng@...rfivetech.com>

Thanks for your patch!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/starfive,jh7100-gpio.yaml
> @@ -0,0 +1,60 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/starfive,jh7100-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: StarFive JH7100 GPIO controller
> +
> +maintainers:
> +  - Huan Feng <huan.feng@...rfivetech.com>
> +  - Drew Fustini <drew@...gleboard.org>
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: starfive,jh7100-gpio
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
> +    minItems: 1
> +    maxItems: 32

What about clocks and resets?

> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  interrupt-controller: true
> +
> +  "#interrupt-cells":
> +    const: 2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-controller
> +  - "#interrupt-cells"
> +  - "#gpio-cells"
> +  - gpio-controller
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +      gpio@...10000 {
> +        compatible = "starfive,jh7100-gpio";
> +        reg = <0x11910000 0x10000>;
> +        gpio-controller;
> +        #gpio-cells = <2>;
> +        interrupt-controller;
> +        #interrupt-cells = <2>;
> +        interrupts = <32>;
> +      };
> +
> +...

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds