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Date: Wed, 28 Sep 2016 07:53:42 +0800 From: Peter Chen <hzpeterchen@...il.com> To: "Maciej S. Szmigiero" <mail@...iej.szmigiero.name> Cc: Peter Chen <peter.chen@....com>, mark.rutland@....com, ulf.hansson@...aro.org, stephen.boyd@...aro.org, k.kozlowski@...sung.com, linux-kernel@...r.kernel.org, festevam@...il.com, stillcompiling@...il.com, pawel.moll@....com, dbaryshkov@...il.com, vaibhav.hiremath@...aro.org, mka@...omium.org, stern@...land.harvard.edu, dwmw3@...radead.org, devicetree@...r.kernel.org, arnd@...db.de, linux-pm@...r.kernel.org, s.hauer@...gutronix.de, troy.kisky@...ndarydevices.com, robh+dt@...nel.org, linux-arm-kernel@...ts.infradead.org, oscar@...andei.net, gregkh@...uxfoundation.org, linux-usb@...r.kernel.org, sre@...nel.org, broonie@...nel.org, p.zabel@...gutronix.de, shawnguo@...nel.org Subject: Re: [PATCH v7 0/8] power: add power sequence library On Wed, Sep 28, 2016 at 01:30:17AM +0200, Maciej S. Szmigiero wrote: > On 20.09.2016 05:36, 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. > > > > [1] http://www.spinics.net/lists/linux-usb/msg142755.html > > [2] http://www.spinics.net/lists/linux-usb/msg143106.html > > [3] http://www.spinics.net/lists/linux-usb/msg142815.html > > Just tested this patch set on UDOO board again to make sure that it still > works after all changes done since it was last tested there and can confirm > that it does work correctly. > Thanks, Maciej. -- Best Regards, Peter Chen
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