linux-kernel - Re: [PATCH v4 4/5] regulator: tps65912: Add regulator driver for the TPS65912 PMIC

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Date:	Wed, 4 Nov 2015 09:35:26 -0600
From:	"Andrew F. Davis" <afd@...com>
To:	Mark Brown <broonie@...nel.org>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Lee Jones <lee.jones@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/5] regulator: tps65912: Add regulator driver for the
 TPS65912 PMIC

On 10/22/2015 11:47 AM, Mark Brown wrote:
> On Thu, Oct 01, 2015 at 03:37:53PM -0500, Andrew F. Davis wrote:
>
>> +static const struct of_device_id tps65912_regulator_of_match_table[] = {
>> +	{ .compatible = "ti,tps65912-regulator", },
>> +	{ /* sentinel */ },
>> +};
>> +MODULE_DEVICE_TABLE(of, tps65912_regulator_of_match_table);
>
> Does this IP block exist outside of the tps65912?  If not why is it
> directly represented in DT?  It seems like this is describing how Linux
> loads drivers not how the hardware is constructed but DT should describe
> the hardware.
>

Something I just noticed, when I remove this table, module loading stops
working, even with 'MODULE_ALIAS("platform:tps65912-regulator");'. It
looks like when DT is enabled platform_uevent (drivers/base/platform.c:787)
only sends out the OF MODALIAS event then returns, not sending out the
platform event, is this desired behavior? If so then I will need this
table even though I still create the device and match it on platform
name as you suggested.
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