linux-kernel - Re: [PATCH] imx8mn-var-som: dts: add SOM EEPROM

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Date:   Fri, 28 Apr 2023 15:06:22 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Hugo Villeneuve <hugo@...ovil.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     Hugo Villeneuve <hvilleneuve@...onoff.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] imx8mn-var-som: dts: add SOM EEPROM

On 27/04/2023 21:56, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Thank you for your patch. There is something to discuss/improve.

> 
> The 4Kbit EEPROM located on the SOM contains hardware configuration
> options, manufacturing infos and ethernet MAC address.

Use subject prefixes matching the subsystem (which you can get for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching).

> 
> Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
> index 9052b0d4b5b4..3ed396f41e46 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
> @@ -30,6 +30,10 @@ reg_eth_phy: regulator-eth-phy {
>  		gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
>  		enable-active-high;
>  	};
> +
> +	aliases {

Keep nodes ordered.

> +		eeprom_som = &eeprom_som;

That's no valid alias. Which upstream kernel driver makes use of this?

> +	};
>  };
>  

Best regards,
Krzysztof