The diff below makes the jtag and serial interfaces of the beaglebone (FT2232H)
work simultaneously.
This is how the beaglebone shows up:
uhub8 at uhub0 port 1 "Standard Microsystems product 0x2412" rev 2.00/b.b2 addr
3
uftdi0 at uhub8 port 1 configuration 1 interface 1 "FTDI BeagleBone/XDS100V2"
rev 2.00/7.00 addr 4
ucom0 at uftdi0 portno 2
ugen0 at uhub8 port 1 configuration 1 "FTDI BeagleBone/XDS100V2" rev 2.00/7.00
addr 4
Like this, openocd (using ugen) and cu both work.
It is just assumed that interface 0 is used for jtag, not sure if this is
always true. I'm also unsure if the diff would break other devices.
Can someone comment on this?
Thanks
Index: uftdi.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/uftdi.c,v
retrieving revision 1.63
diff -u -p -r1.63 uftdi.c
--- uftdi.c 11 Sep 2012 16:04:44 -0000 1.63
+++ uftdi.c 27 Jan 2013 13:20:53 -0000
@@ -748,28 +748,21 @@ int
uftdi_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
- usbd_status err;
u_int8_t nifaces;
if (usb_lookup(uftdi_devs, uaa->vendor, uaa->product) == NULL)
return (UMATCH_NONE);
/* Get the number of interfaces. */
- if (uaa->iface != NULL) {
+ if (uaa->iface != NULL)
nifaces = uaa->nifaces;
- } else {
- err = usbd_set_config_index(uaa->device, UFTDI_CONFIG_INDEX, 1);
- if (err)
- return (UMATCH_NONE);
- err = usbd_interface_count(uaa->device, &nifaces);
- if (err)
- return (UMATCH_NONE);
- usbd_set_config_index(uaa->device, USB_UNCONFIG_INDEX, 1);
- }
+ else
+ return UMATCH_NONE;
/* JTAG on USB interface 0 */
if (uaa->vendor == USB_VENDOR_FTDI &&
- uaa->product == USB_PRODUCT_FTDI_OPENRD &&
+ (uaa->product == USB_PRODUCT_FTDI_OPENRD ||
+ uaa->product == USB_PRODUCT_FTDI_SERIAL_2232C) &&
uaa->ifaceno == 0)
return (UMATCH_NONE);
