netdev - Re: [PATCH v4 1/3] regulator: Add of_regulator_bulk_get

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Message-ID: <Y3NtKgb0LpWs0RkB@shell.armlinux.org.uk>
Date:   Tue, 15 Nov 2022 10:42:50 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Mark Brown <broonie@...nel.org>
Cc:     Corentin LABBE <clabbe@...libre.com>, andrew@...n.ch,
        calvin.johnson@....nxp.com, davem@...emloft.net,
        edumazet@...gle.com, hkallweit1@...il.com,
        jernej.skrabec@...il.com, krzysztof.kozlowski+dt@...aro.org,
        kuba@...nel.org, lgirdwood@...il.com, pabeni@...hat.com,
        robh+dt@...nel.org, samuel@...lland.org, wens@...e.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev,
        netdev@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v4 1/3] regulator: Add of_regulator_bulk_get_all

On Tue, Nov 15, 2022 at 10:34:41AM +0000, Mark Brown wrote:
> On Tue, Nov 15, 2022 at 11:18:50AM +0100, Corentin LABBE wrote:
> > Le Tue, Nov 15, 2022 at 10:03:14AM +0000, Mark Brown a écrit :
> 
> > > What's the use case - why would a device not know which supplies
> > > it requires?  This just looks like an invitation to badly written
> > > consumers TBH.
> 
> > The device know which supply it have, but I found only this way to made all maintainers happy.
> > See https://lore.kernel.org/netdev/0518eef1-75a6-fbfe-96d8-bb1fc4e5178a@linaro.org/t/#m7a2e012f4c7c7058478811929774ab2af9bfcbf6
> 
> Well, it's not making this maintainer happy :/  If we know what
> PHY is there why not just look up the set of supplies based on
> the compatible of the PHY?

It looks to me like this series fetches the regulators before the PHY
is bound to the driver, so what you're proposing would mean that the
core PHY code would need a table of all compatibles (which is pretty
hard to do, they encode the vendor/device ID, not some descriptive
name) and then a list of the regulator names. IMHO that doesn't scale.

-- 
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