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

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Message-ID: <AANLkTin8bXvPqdkYQq++wf0iCK=ZAfZ2jnqbgL=xj8yq@mail.gmail.com>
Date:	Tue, 7 Sep 2010 23:52:09 +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 11:45 PM, venki kaps <venkiece2005@...il.com> wrote:
> Venkii,
> On Tue, Sep 7, 2010 at 9:18 PM, venki kaps <venkiece2005@...il.com> wrote:
>> 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.
>     twl4030_usb_linkstat return value is zero (0) in both
> twl4030_usb_phy_init/twl4030_usb_irq.
 WIth twl4030_usb_phy_init, Everything is fine except battery temperature
 but surprisingly the temperature is fine with PC based usb cable charger and
 the problem is with travel adapter only.

>>> thanks,
>>>
>>> --
>>> Lei Ming
>>>
>>
>
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