linux-kernel - Re: [PATCH v4 1/2] regulator: act8945a: add regulator driver for ACT8945A

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Message-ID: <20160129001603.GM4130@sirena.org.uk>
Date:	Fri, 29 Jan 2016 01:16:03 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Wenyou Yang <wenyou.yang@...el.com>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Javier Martinez Canillas <javier@...hile0.org>,
	Lee Jones <lee.jones@...aro.org>,
	Peter Korsgaard <jacmet@...il.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v4 1/2] regulator: act8945a: add regulator driver for
 ACT8945A

On Wed, Jan 27, 2016 at 10:57:42AM +0800, Wenyou Yang wrote:

> +static const struct of_device_id act8945a_pmic_of_match[] = {
> +	{ .compatible = "active-semi,act8945a-regulator" },
> +	{ },
> +};
> +MODULE_DEVICE_TABLE(of, act8945a_pmic_of_match);

This seems mostly OK but why do we have a compatible string here -
shouldn't the MFD be able to instantiate the regulator function without
needing this?

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