linux-kernel - Re: [PATCH 2/3] mips: dts: ralink: mt7621: add phandle to system controller node for watchdog

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Message-ID: <23d2f23f-b063-c417-e85d-40f09b509d04@linaro.org>
Date:   Fri, 10 Feb 2023 12:00:41 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>,
        linux-watchdog@...r.kernel.org
Cc:     wim@...ux-watchdog.org, linux@...ck-us.net, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, matthias.bgg@...il.com,
        arinc.unal@...nc9.com, tsbogend@...ha.franken.de,
        p.zabel@...gutronix.de, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-mips@...r.kernel.org
Subject: Re: [PATCH 2/3] mips: dts: ralink: mt7621: add phandle to system
 controller node for watchdog

On 10/02/2023 07:56, Sergio Paracuellos wrote:
> To allow to access system controller registers from watchdog driver code
> add a phandle in the watchdog 'wdt' node. This avoid using arch dependent

??? This does not make sense.

> operations in driver code.
> 
> Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> ---
>  arch/mips/boot/dts/ralink/mt7621.dtsi | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/mips/boot/dts/ralink/mt7621.dtsi b/arch/mips/boot/dts/ralink/mt7621.dtsi
> index 5ca40fd21..ebee23a2b 100644
> --- a/arch/mips/boot/dts/ralink/mt7621.dtsi
> +++ b/arch/mips/boot/dts/ralink/mt7621.dtsi
> @@ -71,8 +71,9 @@ sysc: syscon@0 {
>  		};
>  
>  		wdt: wdt@100 {
> -			compatible = "mediatek,mt7621-wdt";
> +			compatible = "mediatek,mt7621-wdt", "syscon";

Why do you need syscon?

Best regards,
Krzysztof