Re: Nokia N900: musb is in wrong state after boot

From: Sergei Shtylyov
Date: Wed Jun 08 2016 - 08:04:13 EST


On 6/8/2016 1:02 PM, Felipe Balbi wrote:

* Pali RohÃr <pali.rohar@xxxxxxxxx> [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