linux-kernel - Re: [PATCH 4/4] arm64: dts: allwinner: h5: Add SID for H5

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Date:   Tue, 24 Jul 2018 11:02:47 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Emmanuel Vadot <manu@...ebsd.org>
Cc:     wens@...e.org, robh+dt@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, will.deacon@....com,
        srinivas.kandagatla@...aro.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: allwinner: h5: Add SID for H5

On Mon, Jul 23, 2018 at 12:42:55PM +0200, Emmanuel Vadot wrote:
> The SID controller on H5 look the same as the one present in the A64.
> But in case we find some difference one day at a compatible string
> of it's own and a fallback to the A64 one.
> 
> Signed-off-by: Emmanuel Vadot <manu@...ebsd.org>
> ---
>  .../devicetree/bindings/nvmem/allwinner,sunxi-sid.txt        | 1 +
>  arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi                 | 5 +++++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt b/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt
> index e319fe5e205a..99c4ba6a3f61 100644
> --- a/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt
> +++ b/Documentation/devicetree/bindings/nvmem/allwinner,sunxi-sid.txt
> @@ -7,6 +7,7 @@ Required properties:
>    "allwinner,sun8i-a83t-sid"
>    "allwinner,sun8i-h3-sid"
>    "allwinner,sun50i-a64-sid"
> +  "allwinner,sun50i-h5-sid"
>  
>  - reg: Should contain registers location and length

Bindings patches should be separate.

> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
> index 62d646baac3c..28183bf77164 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
> @@ -129,3 +129,8 @@
>  		     <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
>  	compatible = "allwinner,sun50i-h5-pinctrl";
>  };
> +
> +&sid {
> +	compatible = "allwinner,sun50i-h5-sid",
> +		     "allwinner,sun50i-a64-sid";
> +};

I'm not sure doing a split similar to what you're doing here just to
save the reg line is worth it.

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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