On Thu, May 29, 2008 at 4:18 AM, Joerg Reisenweber <[EMAIL PROTECTED]> wrote: > Am Do 29. Mai 2008 schrieb Michael Shiloh: >> >> Andy Green wrote: >> > -----BEGIN PGP SIGNED MESSAGE----- >> > Hash: SHA1 >> > >> > Somebody in the thread at some point said: >> > | Am Mi 28. Mai 2008 schrieb Brad Midgley: >> > |> Joerg >> > |> >> > |> On Wed, May 28, 2008 at 2:30 AM, Joerg Reisenweber <[EMAIL PROTECTED]> >> > | wrote: >> > |>> Am Mi 28. Mai 2008 schrieb Brad Midgley: >> > |>>> i think it may still be up in the air >> > |>> Nope it's not, see Y-cable in wiki. Should work perfectly. You just >> > have >> > | to >> > |>> find the 5pin-mini-USB-plug to DIY one. >> > |> is EN_USBHOST is deasserted by the system automatically now? I'll >> > |> update the section in >> > |> http://wiki.openmoko.org/wiki/Neo_FreeRunner_GTA02_Hardware if it is. >> > | >> > | No idea, it's a driver issue. On detection of 47k device is switching to >> > | fastcharge, which I think is actually working. Also it should activate >> > | LOGICAL hostmode for USB-controller same time (NOT asserting >> > EN_USBHOST!), >> > | which is needed for Y-Cable and doesn't hurt charger. I don't have the >> > | slightest idea whether this already is in kernel or not. >> > >> > It is deasserted if it sees you have a 1A charger in there, has been for >> > a while. >> >> A related question: I presume that it is the electrical signal >> EN_USBHOST which flips the switch which causes the USB port to source >> current in host mode, as opposed to sinking current in device mode. >> >> This is of course what is expected of a USB host, but it also prevents >> us from charging the Freerunner when the USB port is in host mode, if an >> appropriate power source is available. >> >> Question: >> Is it possible to charge the Neo Freerunner when using the USB port in >> host mode, by ascerting LOGICAL hostmode and by NOT asserting EN_USBHOST? > > that's exactly how Y-cable_V1 *) works (besides replacing the needed 15k? > pulldown-Rs also switched away by deasserting EN_USBHOST) > The combination LOGICAL hostmode + NO chargepump is exactly what the > kernel-driver should initiate when seeing 47k > > > *) There's the spec for V2 already, that's capable of working with USB2.0-OTG > (supported by GTA03, though USB2.0 will be there with GTA04 at the earliest) > See "Y-Cable revisited" somewhere on the lists - even more simple ;-) I sense a leak of details :) What is the GTA03 that you speak of... I know GTA04 is the next revision being discussed on the mailing lists, but I thought GTA03 was skipped?
Cheers, Federico _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
