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

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Message-ID: <20170516172855.hzshlqjvqe2oqb6e@kozik-lap>
Date:   Tue, 16 May 2017 19:28:55 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Peter Chen <hzpeterchen@...il.com>
Cc:     Roger Quadros <rogerq@...com>, 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, 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 Wed, Feb 15, 2017 at 09:38:09AM +0800, Peter Chen wrote:
> 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.

Hi Peter and others,

What is the status of this patchset? I looked recently and it seemd
not-merged. Are there any issues not dealt with?

Just to reminder, this patchset solves not only Peter's problem but few others
as well, e.g. Odroid U3 USB hub/lan power sequence.

Best regards,
Krzysztof