linux-kernel - Re: [PATCH v2 1/2] ARM: nspire: Use syscon-reboot to handle restart

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Date:   Wed, 26 Oct 2022 16:17:40 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andrew Davis <afd@...com>, Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Daniel Tang <dt.tangr@...il.com>,
        Fabian Vogt <fabian@...ter-vogt.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] ARM: nspire: Use syscon-reboot to handle restart

On 26/10/2022 12:13, Andrew Davis wrote:
> Writing this bit can be handled by the syscon-reboot driver. Add the
> info to DT and remove the machine_desc version.
> 
> Signed-off-by: Andrew Davis <afd@...com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  arch/arm/boot/dts/nspire.dtsi |  7 +++++++

DTS cannot go with code.

Additionally, this breaks people's filtering as there is no "dts" prefix
in the subject.

>  arch/arm/mach-nspire/Kconfig  |  2 ++
>  arch/arm/mach-nspire/mmio.h   |  3 ---
>  arch/arm/mach-nspire/nspire.c | 10 ----------
>  4 files changed, 9 insertions(+), 13 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/nspire.dtsi b/arch/arm/boot/dts/nspire.dtsi
> index bb240e6a3a6f..6357b803521e 100644
> --- a/arch/arm/boot/dts/nspire.dtsi
> +++ b/arch/arm/boot/dts/nspire.dtsi
> @@ -172,7 +172,14 @@ rtc: rtc@...90000 {
>  			};
>  
>  			misc: misc@...a0000 {
> +				compatible = "syscon", "simple-mfd";

These are not allowed on their own (need specific compatible) and you
should have warnings when running dtbs_check.

Best regards,
Krzysztof