From: Peter Chen <hzpeterchen@gmail.com>
To: "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>
Cc: Peter Chen <peter.chen@nxp.com>,
mark.rutland@arm.com, ulf.hansson@linaro.org,
stephen.boyd@linaro.org, k.kozlowski@samsung.com,
linux-kernel@vger.kernel.org, festevam@gmail.com,
stillcompiling@gmail.com, pawel.moll@arm.com,
dbaryshkov@gmail.com, vaibhav.hiremath@linaro.org,
mka@chromium.org, stern@rowland.harvard.edu, dwmw3@infradead.org,
devicetree@vger.kernel.org, arnd@arndb.de,
linux-pm@vger.kernel.org, s.hauer@pengutronix.de,
troy.kisky@boundarydevices.com, robh+dt@kernel.org,
linux-arm-kernel@lists.infradead.org, oscar@naiandei.net,
gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
sre@kernel.org, broonie@kernel.org, p.zabel@pengutronix.de,
shawnguo@kernel.org
Subject: Re: [PATCH v7 0/8] power: add power sequence library
Date: Wed, 28 Sep 2016 07:53:42 +0800 [thread overview]
Message-ID: <20160927235342.GA6165@b29397-desktop> (raw)
In-Reply-To: <57EB0109.4070000@maciej.szmigiero.name>
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
prev parent reply other threads:[~2016-09-27 23:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-20 3:36 [PATCH v7 0/8] power: add power sequence library Peter Chen
2016-09-20 3:36 ` [PATCH v7 1/8] binding-doc: power: pwrseq-generic: add binding doc for generic " Peter Chen
2016-09-20 3:36 ` [PATCH v7 2/8] power: add " Peter Chen
2016-10-12 10:30 ` Heiko Stuebner
2016-10-13 1:22 ` Peter Chen
2016-10-13 7:04 ` Heiko Stuebner
2016-10-13 8:57 ` Peter Chen
2016-09-20 3:36 ` [PATCH v7 3/8] binding-doc: usb: usb-device: add optional properties for power sequence Peter Chen
2016-09-20 3:36 ` [PATCH v7 4/8] usb: core: add power sequence handling for USB devices Peter Chen
2016-09-20 3:36 ` [PATCH v7 5/8] usb: chipidea: let chipidea core device of_node equal's glue layer device of_node Peter Chen
2016-09-20 3:36 ` [PATCH v7 6/8] ARM: dts: imx6qdl: Enable usb node children with <reg> Peter Chen
2016-09-20 3:36 ` [PATCH v7 7/8] ARM: dts: imx6qdl-udoo.dtsi: fix onboard USB HUB property Peter Chen
2016-09-20 3:36 ` [PATCH v7 8/8] ARM: dts: imx6q-evi: Fix onboard hub reset line Peter Chen
2016-09-26 6:26 ` [PATCH v7 0/8] power: add power sequence library Peter Chen
2016-10-08 8:56 ` Peter Chen
2016-09-27 23:30 ` Maciej S. Szmigiero
2016-09-27 23:53 ` Peter Chen [this message]
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