From: joerg Reisenweber <joerg@openmoko.org>
To: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: "Felipe Balbi" <felipe.balbi@linux.intel.com>,
"Tony Lindgren" <tony@atomide.com>,
"Pali Rohár" <pali.rohar@gmail.com>,
"Felipe Balbi" <balbi@ti.com>,
"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>
Subject: Re: Nokia N900: musb is in wrong state after boot
Date: Wed, 08 Jun 2016 14:18:03 +0200 [thread overview]
Message-ID: <17243006.AtPKaaqTIG@saturn> (raw)
In-Reply-To: <71cb45ec-a269-d510-df34-eb6eaa781da8@cogentembedded.com>
On Wed 08 June 2016 15:04:02 Sergei Shtylyov wrote:
> On 6/8/2016 1:02 PM, Felipe Balbi wrote:
> >> * Pali Rohár <pali.rohar@gmail.com> [160607 05:53]:
> >>>> Tony, what do you think about that patch?
> >>>
> >>> Tony, PING
> >>
> >> Yeah I don't know, AFAIK we don't have a generic way to
> >> force MUSB to change mode without ID pin. If you have figured
> >> something generic for that which does not actually tinker with
> >> the PHY registers directly, that should be the generic
> >> musb_set_mode() that we've been wondering about for years.
> >
> > #define MUSB_TEST_FORCE_HOST 0x80
> >
> > Can someone confirm on MUSB's docs (and actual running system) that this
> > does what's supposed to do?
>
> The MUSB programmer's guide says the CID (sic) input is ignored when the
> Force_Host bit is set. The host mode is entered when the Session bit is
> set. But I don't have a MUSB hardware readily available to confirm.
>
> MBR, Sergei
also says:
While the FORCE_HOST bit remains set, the core will enter Host mode when the
Session bit is set and **remain in Host mode until the Session bit is cleared
even if a connected device is disconnected during the session.**
The operating speed while in this mode **is determined for the setting of the
FORCE_HS and FORCE_FS bits of the Testmode register** in Section 23.1.4.11.
see http://talk.maemo.org/showthread.php?p=685367
It's not any fully operational hostmode.
/j
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next prev parent reply other threads:[~2016-06-08 12:18 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-09 15:16 Nokia N900: musb is in wrong state after boot Pali Rohár
2016-01-19 20:33 ` Tony Lindgren
2016-01-21 8:40 ` Pali Rohár
2016-01-21 9:57 ` Ivaylo Dimitrov
2016-01-21 10:23 ` Pali Rohár
2016-01-21 10:27 ` Ivaylo Dimitrov
2016-01-21 10:29 ` joerg Reisenweber
2016-01-21 17:41 ` Tony Lindgren
2016-01-21 18:44 ` joerg Reisenweber
2016-01-21 19:21 ` Tony Lindgren
2016-01-21 19:34 ` joerg Reisenweber
2016-01-21 20:30 ` Tony Lindgren
2016-01-26 14:34 ` Pali Rohár
2016-01-26 17:26 ` Tony Lindgren
2016-02-21 11:12 ` Pali Rohár
2016-02-22 7:31 ` Felipe Balbi
2016-02-22 8:34 ` Pali Rohár
2016-02-22 8:54 ` Felipe Balbi
2016-02-22 8:54 ` Felipe Balbi
2016-02-22 15:36 ` Bin Liu
2016-02-22 15:49 ` Adam Ford
2016-01-23 12:57 ` Pali Rohár
2016-05-29 10:38 ` Pali Rohár
2016-06-07 12:50 ` Pali Rohár
2016-06-08 9:53 ` Tony Lindgren
2016-06-08 10:02 ` Felipe Balbi
2016-06-08 10:19 ` Pali Rohár
2016-06-08 10:20 ` joerg Reisenweber
2016-06-08 12:04 ` Sergei Shtylyov
2016-06-08 12:18 ` joerg Reisenweber [this message]
2016-06-08 12:32 ` Sergei Shtylyov
2016-06-09 21:09 ` Bin Liu
2016-06-09 20:58 ` Bin Liu
2016-06-09 21:25 ` joerg Reisenweber
2016-06-10 15:08 ` Bin Liu
2016-06-10 15:23 ` joerg Reisenweber
2016-06-10 15:59 ` Bin Liu
2016-06-10 16:15 ` joerg Reisenweber
2016-06-10 17:04 ` Nishanth Menon
2016-06-10 17:21 ` joerg Reisenweber
2016-06-10 17:37 ` Bin Liu
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