* Paul Walmsley <paul@xxxxxxxxx> [120524 23:05]: > On Mon, 21 May 2012, Tony Lindgren wrote: > > > This series removes the old legacy fulls speed support for > > omap2 as it's pretty much only used for omap1 only. > > > > For omap2, only n8x0 seems to have active development, and > > that has the external high speed tusb chip instead. > > Just FYI, full speed host USB exists on OMAP4. It's in section 23.13 of > the TRM and we have a hwmod for it. No idea if anyone is actually using > it. Interesting, so it's back on omap4 for some legacy compability reasons i guess. It's not mentioned for omap3 at all, but maybe it's lurking around there somewhere too. Looking at the omap4 TRM, looks like there are two instances of OHCI: The HS OHCI/EHCI controller, and the legacy FS OHCI only controller. The legacy one is using separate transceiver pins (usbc1_*) from the HS OHCI/EHCI controller pins (usbb[12]_*). As the OHCI registers are standard, I'd assume it would be possible to make the FS USB instance to work with the mach-omap2/usb-host.c and drivers/usb/host/ohci-omap3.c driver. So it should still be OK to remove the code in this series. I doubt that anybody would want to use the legacy FS OHCI controller instead of the HS OHCI/EHCI controller though.. If somebody is actually using the legacy controller at usbc1_* pins, please respond. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
