linux-kernel - Re: [PATCH 1/2] ARM: dts: imx7ulp: add sim node

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Date:   Fri, 11 Jan 2019 10:53:15 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson Huang <anson.huang@....com>
Cc:     "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH 1/2] ARM: dts: imx7ulp: add sim node

On Fri, Dec 14, 2018 at 08:20:22AM +0000, Anson Huang wrote:
> i.MX7ULP SoC revision info is inside the SIM mode's JTAG_ID
> register, add sim node to support SoC revision check.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  arch/arm/boot/dts/imx7ulp.dtsi | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi
> index b86daf7..fca6e50 100644
> --- a/arch/arm/boot/dts/imx7ulp.dtsi
> +++ b/arch/arm/boot/dts/imx7ulp.dtsi
> @@ -347,4 +347,17 @@
>  			gpio-ranges = <&iomuxc1 0 96 32>;
>  		};
>  	};
> +
> +	m4aips1: bus@...80000 {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		reg = <0x41080000 0x80000>;
> +		ranges;
> +
> +		sim: sim@...a3000 {
> +			compatible = "fsl,imx7ulp-sim", "syscon";

The compatible needs to be documented. Also we generally compose a series
in order below.

 - Bindings patch
 - Kernel patch
 - DTS patch

Shawn

> +			reg = <0x410a3000 0x1000>;
> +		};
> +	};
>  };
> -- 
> 2.7.4
> 
> 
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> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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