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Date:	Thu, 9 Sep 2010 09:01:10 +0300
From:	Felipe Balbi <balbi@...com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	venki kaps <venkiece2005@...il.com>,
	"greg@...ah.com" <greg@...ah.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Felipe Balbi <me@...ipebalbi.com>,
	"Gadiyar, Anand" <gadiyar@...com>
Subject: Re: [PATCH] USB: otg: twl4030: fix phy initialization(v1)

On Wed, Sep 08, 2010 at 08:49:08PM -0500, Ming Lei wrote:
>2010/9/8 venki kaps <venkiece2005@...il.com>:
>
>>  To resolve the above issue, we have made "PHY power on" in battery
>> adc on function
>>  and "PHY power down" in battery adc off function.
>
>Good news, the temperature is bad value from battery adc if otg phy is power
>down. Maybe you only need to power on otg phy before reading battery adc, then
>power down otg phy after the reading if no usb calbe is connected with musb
>for decreasing power consumption. (I am not familiar with battery adc, just
>for your refrerence)

I think you only need the usb3v1 regulator. And it can even be in sleep
mode, it doens't have to be on. What I would suggest is that usb3v1
never to be turned off, only put in sleep mode.

-- 
balbi
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