linux-kernel - Re: [PATCH v3 4/7] drm/panfrost: Add support for multiple regulators

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Date:   Tue, 21 Jan 2020 11:37:14 +0700
From:   Nicolas Boichat <drinkcat@...omium.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Rob Herring <robh+dt@...nel.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Devicetree List <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>
Subject: Re: [PATCH v3 4/7] drm/panfrost: Add support for multiple regulators

On Tue, Jan 14, 2020 at 10:16 PM Mark Brown <broonie@...nel.org> wrote:
>
> On Tue, Jan 14, 2020 at 03:15:59PM +0800, Nicolas Boichat wrote:
>
> >  - I couldn't find a way to detect the number of regulators in the
> >    device tree, if we wanted to refuse to probe the device if there
> >    are too many regulators, which might be required for safety, see
> >    the thread on v2 [1].
>
> You'd need to enumerate all the properties of the device and look
> for things matching *-supply.

I see ,-) I was hoping for something slightly cleaner, or maybe an
existing function in the core.

Steven: How strongly do you feel about this? If so I can add that
check in the next revision.

Also, just a heads-up, I'm out for the next 2 weeks, I'll send v4 after that.

>
> Reviewed-by: Mark Brown <broonie@...nel.org>