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Message-ID: <HE1PR04MB1450BD44697BCE7777459AEF8BCE0@HE1PR04MB1450.eurprd04.prod.outlook.com>
Date:   Fri, 9 Jun 2017 08:26:28 +0000
From:   Peter Chen <peter.chen@....com>
To:     Fabien Lahoudere <fabien.lahoudere@...labora.co.uk>,
        Peter Chen <hzpeterchen@...il.com>
CC:     Stephen Boyd <sboyd@...eaurora.org>,
        Peter Senna Tschudin <peter.senna@...labora.com>,
        Felipe Balbi <balbi@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "open list:USB PHY LAYER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [RFC] usb-phy-generic: Add support to SMSC USB3315

 
>
>I have a look at your patches (http://www.spinics.net/lists/linux-usb/msg157134.html)
>and I wonder if power sequence is applicable only on hub node?

No, power sequence can be used for any devices which needs to carry out power on
before probe.

> hub are probed too
>late (after ci_ulpi_init). Do you think it is possible to read a power sequence in dts
>from ci_ulpi_init?
>

I think the suitable place for power sequence is at ulpi_of_register, some ULPI PHYs
need to carry out power on before reading ID.

Peter

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