linux-kernel - Re: [PATCH v2 1/4] dt-bindings: watchdog: mt7621-wdt: add phandle to access system controller registers

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Date:   Fri, 10 Feb 2023 14:14:11 +0100
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     linux-watchdog@...r.kernel.org, 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 v2 1/4] dt-bindings: watchdog: mt7621-wdt: add phandle to
 access system controller registers

On Fri, Feb 10, 2023 at 2:03 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 10/02/2023 13:17, Sergio Paracuellos wrote:
> > MT7621 SoC provides a system controller node for accessing to some registers.
> > Add a phandle in this node to avoid using MIPS related arch operations and
> > includes in watchdog driver code.
> >
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> > ---
> >  .../devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml  | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml b/Documentation/devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml
> > index b2b17fdf4..cc701e920 100644
> > --- a/Documentation/devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml
> > +++ b/Documentation/devicetree/bindings/watchdog/mediatek,mt7621-wdt.yaml
> > @@ -19,6 +19,12 @@ properties:
> >    reg:
> >      maxItems: 1
> >
> > +  ralink,sysctl:
>
> Thanks for the changes. I did not notice it before - isn't Ralink part
> of Mediatek now? Also compatible is mediatek, not "ralink"?

Yes, it is. I was using the same prefix as for the memory controller
syscon phandler inside the 'sysc' node [0].

I have no problems at all in changing this to 'mediatek' if preferred.

Thanks,
    Sergio Paracuellos

[0]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/mips/boot/dts/ralink/mt7621.dtsi#n67
>
>
>
> Best regards,
> Krzysztof
>