linux-kernel - Re: [PATCH 0/2] add regulator driver and mfd cell for Intel Cherry Trail Whiskey Cove PMIC

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Message-ID: <20191028124554.GF5015@sirena.co.uk>
Date:   Mon, 28 Oct 2019 12:45:54 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Andrey Zhizhikin <andrey.z@...il.com>,
        Hans de Goede <hdegoede@...hat.com>, lgirdwood@...il.com,
        lee.jones@...aro.org, linux-kernel@...r.kernel.org,
        Andrey Zhizhikin <andrey.zhizhikin@...ca-geosystems.com>
Subject: Re: [PATCH 0/2] add regulator driver and mfd cell for Intel Cherry
 Trail Whiskey Cove PMIC

On Mon, Oct 28, 2019 at 02:41:46PM +0200, Adrian Hunter wrote:
> On 25/10/19 10:55 AM, Andy Shevchenko wrote:

> > Since it's about UHS/SD, Cc to Adrian as well.

> My only concern is that the driver might conflict with ACPI methods trying
> to do the same thing, e.g. there is one ACPI SDHC instance from GPDWin DSDT
> with code like this:

That's certainly what's idiomatic for ACPI (though machine specific
quirks are too!).  The safe thing to do would be to only register the
supply on systems where we know there's no ACPI method.

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