diff options
Diffstat (limited to 'src/jtag/drivers/ft2232.c')
| -rw-r--r-- | src/jtag/drivers/ft2232.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/jtag/drivers/ft2232.c b/src/jtag/drivers/ft2232.c index 831a5dca..06fc2523 100644 --- a/src/jtag/drivers/ft2232.c +++ b/src/jtag/drivers/ft2232.c @@ -2182,6 +2182,11 @@ static int usbjtag_init(void) } else if (strcmp(ft2232_layout, "evb_lm3s811") == 0) { + /* There are multiple revisions of LM3S811 eval boards: + * - Rev B (and older?) boards have no SWO trace support. + * - Rev C boards add ADBUS_6 DBG_ENn and BDBUS_4 SWO_EN; + * they should use the "luminary_icdi" layout instead. + */ nTRST = 0x0; nTRSTnOE = 0x00; nSRST = 0x20; @@ -2191,6 +2196,9 @@ static int usbjtag_init(void) } else if (strcmp(ft2232_layout, "luminary_icdi") == 0) { + /* Most Luminary eval boards support SWO trace output, + * and should use this "luminary_icdi" layout. + */ nTRST = 0x0; nTRSTnOE = 0x00; nSRST = 0x20; |