linux-kernel - Re: [PATCH 1/2] dt-bindings: devapc: Update bindings

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Message-ID: <20210326195802.GA3761703@robh.at.kernel.org>
Date:   Fri, 26 Mar 2021 13:58:02 -0600
From:   Rob Herring <robh@...nel.org>
To:     Nina Wu <nina-cm.wu@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        Neal Liu <neal.liu@...iatek.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        Jackson-kt.Chang@...iatek.com
Subject: Re: [PATCH 1/2] dt-bindings: devapc: Update bindings

On Fri, Mar 26, 2021 at 03:31:10PM +0800, Nina Wu wrote:
> From: Nina Wu <Nina-CM.Wu@...iatek.com>
> 
> To support newer hardware architecture of devapc,
> update device tree bindings.
> 
> Signed-off-by: Nina Wu <Nina-CM.Wu@...iatek.com>
> ---
>  .../devicetree/bindings/soc/mediatek/devapc.yaml   | 41 ++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
> index 31e4d3c..489f6a9 100644
> --- a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
> +++ b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
> @@ -20,9 +20,27 @@ properties:
>    compatible:
>      enum:
>        - mediatek,mt6779-devapc
> +      - mediatek,mt8192-devapc
> +
> +  version:
> +    description: The version of the hardware architecture

This should be implied by the compatible string.

> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [1, 2]
> +    maxItems: 1
> +
> +  slave_type_num:

vendor prefix needed and s/_/-/

> +    description: The number of the devapc set

What?

> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [1, 4]
> +    maxItems: 1
>  
>    reg:
>      description: The base address of devapc register bank
> +    maxItems: 4

Need to define what each region is.

> +
> +  vio_idx_num:

vendor prefix needed and s/_/-/

> +    description: The number of the devices controlled by devapc

No need to know which devices?

> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>      maxItems: 1

uint32-array with 'maxItems: 1' is just 'uint32'

>  
>    interrupts:
> @@ -39,7 +57,10 @@ properties:
>  
>  required:
>    - compatible
> +  - version
> +  - slave_type_num
>    - reg
> +  - vio_idx_num
>    - interrupts
>    - clocks
>    - clock-names
> @@ -53,8 +74,28 @@ examples:
>  
>      devapc: devapc@...07000 {
>        compatible = "mediatek,mt6779-devapc";
> +      version = <1>;
> +      slave_type_num = <1>;
>        reg = <0x10207000 0x1000>;
> +      vio_idx_num = <511>;
>        interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_LOW>;
>        clocks = <&infracfg_ao CLK_INFRA_DEVICE_APC>;
>        clock-names = "devapc-infra-clock";
>      };
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/mt8192-clk.h>
> +
> +    devapc: devapc@...07000 {
> +        compatible = "mediatek,mt8192-devapc";
> +        version = <2>;
> +        slave_type_num = <4>;
> +        reg = <0 0x10207000 0 0x1000>,
> +            <0 0x10274000 0 0x1000>,
> +            <0 0x10275000 0 0x1000>,
> +            <0 0x11020000 0 0x1000>;
> +        vio_idx_num = <367 292 242 58>;

Is the length of this the same as the value of slave_type_num? If so, 
don't need both.

> +        interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>;
> +        clocks = <&infracfg_ao CLK_INFRA_DEVICE_APC>;
> +        clock-names = "devapc-infra-clock";
> +    };
> -- 
> 2.6.4
>