[U-Boot] USB on OMAP3

[John Rigby]

On Wed, Aug 31, 2011 at 9:28 AM, Gary Thomas <gary at mlbassoc.com> wrote:

> I'm using v2011.06 on the TI OMAP3 platform (internal, similar to
> BeagleBoard)
>
> I'd like my board to support both EHCI and MUSB in host mode.
> However, when I define both of these, I get compile errors:
> drivers/usb/musb/libusb_musb.o: In function `usb_lowlevel_stop':
> /local/DM3730/u-boot/drivers/usb/musb/musb_hcd.c:1149: multiple definition
> of `usb_lowlevel_stop'
> drivers/usb/host/libusb_host.o:/local/DM3730/u-boot/drivers/usb/host/ehci-hcd.c:795:
> first defined here
> drivers/usb/musb/libusb_musb.o: In function `submit_int_msg':
> /local/DM3730/u-boot/drivers/usb/musb/musb_hcd.c:1162: multiple definition
> of `submit_int_msg'
> drivers/usb/host/libusb_host.o:/local/DM3730/u-boot/drivers/usb/host/ehci-hcd.c:900:
> first defined here
> drivers/usb/musb/libusb_musb.o: In function `submit_bulk_msg':
> /local/DM3730/u-boot/drivers/usb/musb/musb_hcd.c:949: multiple definition
> of `submit_bulk_msg'
> drivers/usb/host/libusb_host.o:/local/DM3730/u-boot/drivers/usb/host/ehci-hcd.c:865:
> first defined here
> drivers/usb/musb/libusb_musb.o: In function `submit_control_msg':
> /local/DM3730/u-boot/drivers/usb/musb/musb_hcd.c:849: multiple definition
> of `submit_control_msg'
> drivers/usb/host/libusb_host.o:/local/DM3730/u-boot/drivers/usb/host/ehci-hcd.c:877:
> first defined here
> drivers/usb/musb/libusb_musb.o: In function `usb_lowlevel_init':
> /local/DM3730/u-boot/drivers/usb/musb/musb_hcd.c:1097: multiple definition
> of `usb_lowlevel_init'
> drivers/usb/host/libusb_host.o:/local/DM3730/u-boot/drivers/usb/host/ehci-hcd.c:799:
> first defined here
>
> Is this expected to work?  If not, any pointers on how I might make
> both controllers play nice?
>
> I think the answer there is no the musb* and ehci* apis both expect to be
the only usb host code enabled at any one time.  I suspect to fix this you
would have to add some abstration to u-boot to deal with multiple host
controlllers at runtime.

--john