linux-kernel - Re: [PATCH v4 1/6] dt-bindings: clock: meson: add A1 PLL clock controller bindings

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Date:   Fri, 13 Dec 2019 11:38:56 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Jian Hu <jian.hu@...ogic.com>
Cc:     Jerome Brunet <jbrunet@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Rob Herring <robh@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Qiufang Dai <qiufang.dai@...ogic.com>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        Victor Wan <victor.wan@...ogic.com>,
        Chandle Zou <chandle.zou@...ogic.com>,
        linux-clk@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v4 1/6] dt-bindings: clock: meson: add A1 PLL clock
 controller bindings

Hi,

On Fri, Dec 06, 2019 at 03:40:47PM +0800, Jian Hu wrote:
> Add the documentation to support Amlogic A1 PLL clock driver,
> and add A1 PLL clock controller bindings.
>
> Signed-off-by: Jian Hu <jian.hu@...ogic.com>
> ---
>  .../bindings/clock/amlogic,a1-pll-clkc.yaml   | 59 +++++++++++++++++++
>  include/dt-bindings/clock/a1-pll-clkc.h       | 16 +++++
>  2 files changed, 75 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
>  create mode 100644 include/dt-bindings/clock/a1-pll-clkc.h
>
> diff --git a/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
> new file mode 100644
> index 000000000000..7feeef5abf1b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/amlogic,a1-pll-clkc.yaml
> @@ -0,0 +1,59 @@
> +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
> +/*
> + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
> + */
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/clock/amlogic,a1-pll-clkc.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Amlogic Meson A/C serials PLL Clock Control Unit Device Tree Bindings
> +
> +maintainers:
> +  - Neil Armstrong <narmstrong@...libre.com>
> +  - Jerome Brunet <jbrunet@...libre.com>
> +  - Jian Hu <jian.hu@...n.hu.com>
> +
> +properties:
> +  compatible:
> +    - enum:
> +        - amlogic,a1-pll-clkc

I'm not sure this works, compatible shouldn't contain a list.

You can write this like:
compatible:
  const: amlogic,a1-pll-clkc

> +  "#clock-cells":
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +
> +clocks:
> +  minItems: 2
> +  maxItems: 2

This is redundant, it will be added automatically by the tools ...

> +  items:
> +   - description: Input xtal_fixpll
> +   - description: Input xtal_hifipll

... When you have a list of items :)

> +
> +clock-names:
> +  minItems: 2
> +  maxItems: 2
> +  items:
> +     - const: xtal_fixpll
> +     - const: xtal_hifipll

Same story here

Maxime

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