linux-kernel - Re: [PATCH v2 2/2] ARM: dts: kirkwood: Add Ctera C-200 V1 board

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Date:   Tue, 1 Mar 2022 00:43:16 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Pawel Dembicki <paweldembicki@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Olof Johansson <olof@...om.net>, soc@...nel.org,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Corentin Labbe <clabbe@...libre.com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Hao Fang <fanghao11@...wei.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/2] ARM: dts: kirkwood: Add Ctera C-200 V1 board

On Tue, Feb 15, 2022 at 5:40 PM Pawel Dembicki <paweldembicki@...il.com> wrote:

> +&i2c0 {
> +       status = "okay";
> +
> +       rtc@30 {
> +               compatible = "s35390a";
> +               reg = <0x30>;
> +       };
> +
> +       lm63@4c {
> +               compatible = "national,lm63";
> +               reg = <0x4c>;
> +       };

Think about adding chassis thermal zone for this sensor,

I suppose you don't have any active control of cooling (fan)?
This often sits on GPIO...

In that case just add a critical temperature so it can't burn
down the house.

See:
arch/arm/boot/dts/gemini-dlink-dns-313.dts
node thermal-zones {} for an example of how to do this
quick and easy. You need CONFIG_THERMAL and
CONFIG_THERMAL_HWMON for this to work.

Yours,
Linus Walleij