linux-kernel - Re: [PATCH v9 02/22] dt-bindings: ARM: Mediatek: Add new document bindings of mdpsys controller

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Date:   Wed, 2 Jun 2021 12:15:38 -0500
From:   Rob Herring <robh@...nel.org>
To:     Chun-Jie Chen <chun-jie.chen@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, srv_heupstream@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        Weiyi Lu <weiyi.lu@...iatek.com>
Subject: Re: [PATCH v9 02/22] dt-bindings: ARM: Mediatek: Add new document
 bindings of mdpsys controller

On Mon, May 24, 2021 at 08:20:33PM +0800, Chun-Jie Chen wrote:
> This patch adds the new binding documentation of mdpsys controller
> for Mediatek MT8192.
> 
> Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
> Signed-off-by: chun-jie.chen <chun-jie.chen@...iatek.com>
> ---
>  .../arm/mediatek/mediatek,mdpsys.yaml         | 40 +++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mdpsys.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mdpsys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mdpsys.yaml
> new file mode 100644
> index 000000000000..22252c322c03
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mdpsys.yaml
> @@ -0,0 +1,40 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,mdpsys.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek MDPSYS Controller
> +
> +maintainers:
> +  - Chun-Jie Chen <chun-jie.chen@...iatek.com>
> +
> +description:
> +  The Mediatek mdpsys controller provides functional configurations and clocks to the system.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - mediatek,mt8192-mdpsys
> +      - const: syscon

What makes this a syscon? Please add some description about what it 
provides other than clocks.

> +
> +  reg:
> +    maxItems: 1
> +
> +  '#clock-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    mdpsys: syscon@...00000 {

If primarily a clock controller:

clock-controller@...

> +        compatible = "mediatek,mt8192-mdpsys", "syscon";
> +        reg = <0x1f000000 0x1000>;
> +        #clock-cells = <1>;
> +    };
> -- 
> 2.18.0