linux-kernel - Re: [PATCH v2 19/23] arm64: dts: mt8192: Add i2c aliases

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAGXv+5FO5gBv1L4S_Nitmfv1zwjTGvp3CPP8CyFVEAq3DkkJ-g@mail.gmail.com>
Date:   Mon, 21 Feb 2022 12:50:08 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Allen-KH Cheng <allen-kh.cheng@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "--to=Krzysztof Kozlowski" <krzysztof.kozlowski@...onical.com>,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Ryder Lee <ryder.lee@...nel.org>
Subject: Re: [PATCH v2 19/23] arm64: dts: mt8192: Add i2c aliases

Hi,

On Fri, Feb 18, 2022 at 5:16 PM Allen-KH Cheng
<allen-kh.cheng@...iatek.com> wrote:
>
> Add i2c aliases for mt8192 SoC
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> ---
>  arch/arm64/boot/dts/mediatek/mt8192.dtsi | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> index 55bcbf72a366..e3314cdc7c1a 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> @@ -21,6 +21,19 @@
>         #address-cells = <2>;
>         #size-cells = <2>;
>
> +       aliases {
> +               i2c0 = &i2c0;
> +               i2c1 = &i2c1;
> +               i2c2 = &i2c2;
> +               i2c3 = &i2c3;
> +               i2c4 = &i2c4;
> +               i2c5 = &i2c5;
> +               i2c6 = &i2c6;
> +               i2c7 = &i2c7;
> +               i2c8 = &i2c8;
> +               i2c9 = &i2c9;

AFAIK, maintainers have suggested against [1] having aliases in the .dtsi.

If the numbering isn't an issue, I suggest just dropping it altogether.
If it is, then the aliases should be added at the board level, and only
for the interfaces that are actually enabled.

ChenYu

[1] https://lore.kernel.org/linux-rockchip/CAK8P3a25iYksubCnQb1-e5yj=crEsK37RB9Hn4ZGZMwcVVrG7g@mail.gmail.com/

> +       };
> +
>         clk26m: oscillator0 {
>                 compatible = "fixed-clock";
>                 #clock-cells = <0>;
> --
> 2.18.0
>