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From: Pali =?utf-8?q?Roh=C3=A1r?= <pali.rohar@gmail.com>
To: Tony Lindgren <tony@atomide.com>
Subject: Re: Nokia N900: musb is in wrong state after boot
Date: Sun, 21 Feb 2016 12:12:49 +0100
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Cc: joerg Reisenweber <joerg@openmoko.org>, Felipe Balbi <balbi@kernel.org>,
        "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-omap@vger.kernel.org,
        Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
        Sebastian Reichel <sre@kernel.org>,
        Aaro Koskinen <aaro.koskinen@iki.fi>, Pavel Machek <pavel@ucw.cz>,
        Nishanth Menon <nm@ti.com>
References: <201601091616.04193@pali> <20160126143450.GG25796@pali> <20160126172631.GZ19432@atomide.com>
In-Reply-To: <20160126172631.GZ19432@atomide.com>
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On Tuesday 26 January 2016 18:26:32 Tony Lindgren wrote:
> * Pali Roh=C3=A1r <pali.rohar@gmail.com> [160126 06:35]:
> > On Thursday 21 January 2016 12:30:13 Tony Lindgren wrote:
> > > * joerg Reisenweber <joerg@openmoko.org> [160121 11:35]:
> > > > On Thu 21 January 2016 11:21:13 Tony Lindgren wrote:
> > > > > Do you have some pointer
> > > > > to the "certain resistor value on ID to GND" spec? Is it
> > > > > maybe part of the carkit related parts of the USB spec?
> > > >=20
> > > > ""Three additional ID pin states are defined[4] at the nominal
> > > > resistance values of 124 k=CE=A9, 68 k=CE=A9, and 36.5 k=CE=A9, wit=
h respect
> > > > to the ground pin. These permit the device to work with USB
> > > > Accessory Charger Adapters that allows the OTG device to be
> > > > attached to both a charger and another device simultaneously.
> > > > [6]""
> > > > https://en.wikipedia.org/wiki/USB_On-The-Go#OTG_micro_plugs
> > >=20
> > > OK thanks. So it's the "accessory charger" part of the
> > > battery charging specification 1.1.
> >=20
> > So, Tony, do you have some idea what needs to be changed and how to
> > fix peripheral mode after boot on Nokia N900?
>=20
> No, I'm waiting to hear an educated guess from Felipe on this one.

PING! Still no answer.
=46elipe changed email address.

> > First I would like to have fully working peripheral mode on Nokia
> > N900 and then we can try to hack host mode (if possible).
> >=20
> > But peripheral mode is a must due to development, because it
> > provides usb network or usb tty.
>=20
> Totally.
>=20
> Regards,
>=20
> Tony

=2D-=20
Pali Roh=C3=A1r
pali.rohar@gmail.com

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