linux-kernel - Re: [PATCH v5 0/5] regulator: of: Add initial and suspend modes support

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Date:	Fri, 07 Nov 2014 16:26:33 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Cc:	Mark Brown <broonie@...nel.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Olof Johansson <olof@...om.net>,
	Chris Zhong <zyw@...k-chips.com>,
	Abhilash Kesavan <kesavan.abhilash@...il.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v5 0/5] regulator: of: Add initial and suspend modes support

On pią, 2014-11-07 at 14:00 +0100, Javier Martinez Canillas wrote:
> Hello Mark,
> 
> This is the fifth version of the series that adds regulator initial
> and suspend operating modes support. It relies on the existing work
> that added suspend states bindings. The opmodes are parsed by the
> regulator core and drivers should only define a translation function
> to map between hardware specific to standard modes.
> 
> The series adds a "regulator-initial-mode" property to configure at
> startup, the operating mode for the regulators that support changing
> its mode during normal operation and a "regulator-mode" property for
> the regulators that supports changing its operating mode when the
> system enters in a suspend state. These properties were originally
> part of Chanwoo Choi's regulator suspend state series [0] but were
> removed since there wasn't a way to define the operating modes in a
> generic way.
> 
> The generic regulator DT binding doc explains that each device has
> to document what their valid operating modes are and drivers must
> add a translation function so the core knows how to map the opmodes.
> 
> Older versions of this series were meant to add initial and suspend
> modes for the max77802 regulator driver but the feedback was that
> this should had been done in a generic way. The latest version was
> "[PATCH v4 00/14] Add Maxim 77802 PMIC support" [1] but that series
> mixed core changes, bugfixes and new driver features.
> 
> This series instead contains only the patches that add the support
> to the regulator core and drivers are only modified when a function
> signature is changed to maintain git bisect-ability.
> 
> If the patches are merged, following series will change the drivers
> using of_regulator_match() to pass the regulator description in the
> match table and another series will add the new opmode feature in
> the max77802 regulator driver.
> 
> The series is composed of the following patches:
> 
> Javier Martinez Canillas (5):
>   regulator: Document binding for initial and suspend modes
>   regulator: Add function to map modes to struct regulator_desc
>   regulator: of: Add regulator desc param to
>     of_get_regulator_init_data()
>   regulator: of: Pass the regulator description in the match table
>   regulator: of: Add support for parsing initial and suspend modes

I see my previous thoughts were addressed. I had few minor questions
about patch 3/5 but still whole patchset looks fine to me.

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

Best regards,
Krzysztof





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