Messages in this thread | | | From | joerg Reisenweber <> | Subject | Re: Nokia N900: musb is in wrong state after boot | Date | Wed, 08 Jun 2016 14:18:03 +0200 |
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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.
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