linux-kernel - Re: [PATCH] USB: otg: twl4030: fix phy initialization(v1)

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Message-ID: <AANLkTinkhY-y6Qv6HJnGbggksdEmULgQ9DTOrNmu1tLp@mail.gmail.com>
Date:	Tue, 7 Sep 2010 21:18:59 +0530
From:	venki kaps <venkiece2005@...il.com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	greg@...ah.com, linux-usb@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Felipe Balbi <me@...ipebalbi.com>,
	Anand Gadiyar <gadiyar@...com>
Subject: Re: [PATCH] USB: otg: twl4030: fix phy initialization(v1)

Venkii,

On Tue, Sep 7, 2010 at 9:10 PM, Ming Lei <tom.leiming@...il.com> wrote:
> 2010/9/7 venki kaps <venkiece2005@...il.com>:
>> thanks for your good response.
>>
>> Venkii,
>>
>> On Tue, Sep 7, 2010 at 6:54 PM, Ming Lei <tom.leiming@...il.com> wrote:
>>> 2010/9/7 venki kaps <venkiece2005@...il.com>:
>>>> Dear USB experts,
>>>>
>>>>  Is the same fix valid for omap3430 + 2.6.32 Kernel?
>>>>
>>>>  I have been facing mp3 playback idle current consumption 20mA more
>>>> after booting without USB cable connected
>>>>  but If USB cable detach and attach happen, then able to hit proper
>>>> values otherwise irrespective of cold/warm reset
>>>>  the current values increases to 20mA.
>>>>
>>>>  with cable,
>>>>      OTG_SYSCONFIG standby mode of operation - SMART idle
>>>>      HSOTGUSB_STANDBY - SMART standby
>>>>
>>>>  without cable,
>>>>        OTG_SYSCONFIG standby mode of operation - SMART idle
>>>>        HSOTGUSB_STANDBY - Active
>>>>
>>>>  Even i have applied  patch but still the same issue.
>>>
>>> Are you applying the patch below?
>>>
>>>         http://marc.info/?l=linux-omap&m=128378686221264&w=2
>>>
>>> The patch(USB: otg: twl4030: fix phy initialization(v1)) above is against
>>> 2.6.36-rc3, I don't think you can apply it directly on 2.6.32. And the patch
>>> is introduced to fix the problems caused by
>>>
>>>          commit 461c317705eca5cac09a360f488715927fd0a927.
>>>
>>> which change is committed into mainline 2.6.36-rc3.
>>  >>> Yes, this patch i have applied.
>
> If you applied the patch, I guess you may see __twl4030_phy_power(twl, 0)
> is called from .probe.
>
> If called,  seems your description a little contradictory since you observed
> __twl4030_phy_power(twl, 0) may hit proper values, right?

  Yes, __twl4030_phy_power(twl, 0) -  the current values are getting
proper with or without cable.
>
> If not called, could you trace the return value of twl4030_usb_linkstat in
> twl4030_usb_phy_init?
ok, i can do that and update.
>
> thanks,
>
> --
> Lei Ming
>
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