linux-kernel - Re: [PATCH 09/10] regulator: Add LM3631 driver

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Message-ID: <20140214205532.GU4451@sirena.org.uk>
Date:	Fri, 14 Feb 2014 20:55:32 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Milo Kim <milo.kim@...com>
Cc:	Lee Jones <lee.jones@...aro.org>, Jingoo Han <jg1.han@...sung.com>,
	Bryan Wu <cooloney@...il.com>, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH 09/10] regulator: Add LM3631 driver

On Fri, Feb 14, 2014 at 03:32:31PM +0900, Milo Kim wrote:
> LM3631 regulator driver has 5 regulators.
> One boost output and four LDOs are used for the display module.
> Boost voltage is configurable but always on.
> Supported operations for LDOs are enabled/disabled and voltage change.

This looks basically good, a couple of minor nits below but nothing
substantial.

> +static const int lm3631_boost_vtbl[] = {
> +	4500000, 4550000, 4600000, 4650000, 4700000, 4750000, 4800000, 4850000,
> +	4900000, 4950000, 5000000, 5050000, 5100000, 5150000, 5200000, 5250000,
> +	5300000, 5350000, 5400000, 5450000, 5500000, 5550000, 5600000, 5650000,
> +	5700000, 5750000, 5800000, 5850000, 5900000, 5950000, 6000000, 6050000,
> +	6100000, 6150000, 6200000, 6250000, 6300000, 6350000,
> +};

This looks like a linear range so could use the linear range helpers
(4.5-6.35V in steps of 0.05V)?  Similarly for the LDO.

> +static struct of_regulator_match lm3631_regulator_matches[] = {
> +	{ .name = "vboost", .driver_data = (void *)LM3631_BOOST, },
> +	{ .name = "vcont",  .driver_data = (void *)LM3631_LDO_CONT, },
> +	{ .name = "voref",  .driver_data = (void *)LM3631_LDO_OREF, },
> +	{ .name = "vpos",   .driver_data = (void *)LM3631_LDO_POS,  },
> +	{ .name = "vneg",   .driver_data = (void *)LM3631_LDO_NEG,  },
> +};

These names don't correspond to what was in the binding document and
there's a couple of extra LDOs.

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