linux-kernel - Re: [PATCH v1 3/4] LF-2571-3 arm64: dts: imx8m: add nvmem-cell related stuff

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Date:   Wed, 4 Nov 2020 09:06:50 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Alice Guo <alice.guo@....com>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org, peng.fan@....com
Subject: Re: [PATCH v1 3/4] LF-2571-3 arm64: dts: imx8m: add nvmem-cell
 related stuff

On Wed, 4 Nov 2020 at 04:12, Alice Guo <alice.guo@....com> wrote:
>
> Add nvmem-cell related stuff for the soc unique ID.

Subject and commit msg: please do not add "stuff" but describe what
are you adding and why (what is the purpose, feature, benefit).
"Stuff" is too generic.

>
> Signed-off-by: Alice Guo <alice.guo@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi | 6 ++++++
>  arch/arm64/boot/dts/freescale/imx8mn.dtsi | 6 ++++++
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 6 ++++++
>  arch/arm64/boot/dts/freescale/imx8mq.dtsi | 6 ++++++
>  4 files changed, 24 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index ec71a5e8a062..b45dfe133ec7 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -261,6 +261,8 @@
>                 #address-cells = <1>;
>                 #size-cells = <1>;
>                 ranges = <0x0 0x0 0x0 0x3e000000>;
> +               nvmem-cells = <&imx8mm_uid>;
> +               nvmem-cell-names = "soc_unique_id";
>
>                 aips1: bus@...00000 {
>                         compatible = "fsl,aips-bus", "simple-bus";
> @@ -475,6 +477,10 @@
>                                 #address-cells = <1>;
>                                 #size-cells = <1>;
>
> +                               imx8mm_uid: unique_id@410 {
> +                                       reg = <4 8>;

Register addresses and sizes are by convention in hex.

Best regards,
Krzysztof