linux-kernel - Re: [PATCH v13 00/12] power: add power sequence library

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Message-ID: <20170215013808.GB6579@b29397-desktop>
Date:   Wed, 15 Feb 2017 09:38:09 +0800
From:   Peter Chen <hzpeterchen@...il.com>
To:     Roger Quadros <rogerq@...com>
Cc:     Peter Chen <peter.chen@....com>, gregkh@...uxfoundation.org,
        stern@...land.harvard.edu, ulf.hansson@...aro.org,
        broonie@...nel.org, sre@...nel.org, robh+dt@...nel.org,
        shawnguo@...nel.org, rjw@...ysocki.net, dbaryshkov@...il.com,
        mark.rutland@....com, heiko@...ech.de, stephen.boyd@...aro.org,
        frank.li@....com, gary.bisson@...ndarydevices.com,
        festevam@...il.com, stillcompiling@...il.com, arnd@...db.de,
        vaibhav.hiremath@...aro.org, krzk@...nel.org, mka@...omium.org,
        devicetree@...r.kernel.org, mail@...iej.szmigiero.name,
        pawel.moll@....com, linux-pm@...r.kernel.org,
        s.hauer@...gutronix.de, troy.kisky@...ndarydevices.com,
        linux-arm-kernel@...ts.infradead.org, hverkuil@...all.nl,
        oscar@...andei.net, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, p.zabel@...gutronix.de,
        jun.li@....com
Subject: Re: [PATCH v13 00/12] power: add power sequence library

On Tue, Feb 14, 2017 at 12:21:48PM +0200, Roger Quadros wrote:
> Peter,
> 
> On 11/02/17 03:27, Peter Chen wrote:
> > Hi all,
> > 
> > This is a follow-up for my last power sequence framework patch set [1].
> > According to Rob Herring and Ulf Hansson's comments[2]. The kinds of
> > power sequence instances will be added at postcore_initcall, the match
> > criteria is compatible string first, if the compatible string is not
> > matched between dts and library, it will try to use generic power sequence.
> > 	 
> > The host driver just needs to call of_pwrseq_on/of_pwrseq_off
> > if only one power sequence instance is needed, for more power sequences
> > are used, using of_pwrseq_on_list/of_pwrseq_off_list instead (eg, USB hub driver).
> > 
> > In future, if there are special power sequence requirements, the special
> > power sequence library can be created.
> > 
> > This patch set is tested on i.mx6 sabresx evk using a dts change, I use
> > two hot-plug devices to simulate this use case, the related binding
> > change is updated at patch [1/6], The udoo board changes were tested
> > using my last power sequence patch set.[3]
> > 
> > Except for hard-wired MMC and USB devices, I find the USB ULPI PHY also
> > need to power on itself before it can be found by ULPI bus.
> 
> Can patches 3-7 can be sent independently of the power related patches?
> 

Yes, I had planned to submit patches 3-7 for v4.11-rc1 today first, but it
seems you still have comments for patch 6, let's wait a conclusion first.

-- 

Best Regards,
Peter Chen