linux-kernel - Re: [PATCH v7 3/6] PM / devfreq: exynos-bus: Add registration of interconnect child device

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Message-ID: <CAJKOXPf_WP0+S70kT+38asBsQFTPKqw=hpvkoWx1Ec2qADz4-A@mail.gmail.com>
Date:   Tue, 3 Nov 2020 14:11:45 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:     Chanwoo Choi <cw00.choi@...sung.com>, georgi.djakov@...aro.org,
        devicetree@...r.kernel.org, robh+dt@...nel.org,
        a.swigon@...sung.com, myungjoo.ham@...sung.com,
        Inki Dae <inki.dae@...sung.com>,
        Seung Woo Kim <sw0312.kim@...sung.com>,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-pm@...r.kernel.org,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v7 3/6] PM / devfreq: exynos-bus: Add registration of
 interconnect child device

On Tue, 3 Nov 2020 at 13:32, Sylwester Nawrocki <s.nawrocki@...sung.com> wrote:
>
> Hi Chanwoo,
>
> On 03.11.2020 11:45, Chanwoo Choi wrote:
> > On 10/30/20 9:51 PM, Sylwester Nawrocki wrote:
> >> This patch adds registration of a child platform device for the exynos
> >> interconnect driver. It is assumed that the interconnect provider will
> >> only be needed when #interconnect-cells property is present in the bus
> >> DT node, hence the child device will be created only when such a property
> >> is present.
> >>
> >> Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
>
> >>  drivers/devfreq/exynos-bus.c | 17 +++++++++++++++++
>
> > We don't need to  add 'select INTERCONNECT_EXYNOS' in Kconfig?
>
> I think by doing so we could run into some dependency issues.
>
> > Do you want to remain it as optional according to user?
> Yes, I would prefer to keep it selectable through defconfig.
> Currently it's only needed by one 32-bit ARM board.

I am fine with it as it is really optional.

You could consider then "imply" but then you would need to check for
dependencies (the same as with select).

Best regards,
Krzysztof