diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ns16550.c | 7 | ||||
| -rw-r--r-- | drivers/serial.c | 21 |
2 files changed, 22 insertions, 6 deletions
diff --git a/drivers/ns16550.c b/drivers/ns16550.c index 6f818d7..9344a0a 100644 --- a/drivers/ns16550.c +++ b/drivers/ns16550.c @@ -17,12 +17,19 @@ void NS16550_init (NS16550_t com_port, int baud_divisor) { com_port->ier = 0x00; +#ifdef CONFIG_OMAP1510 + com_port->mdr1 = 0x7; /* mode select reset TL16C750*/ +#endif com_port->lcr = LCR_BKSE | LCRVAL; com_port->dll = baud_divisor & 0xff; com_port->dlm = (baud_divisor >> 8) & 0xff; com_port->lcr = LCRVAL; com_port->mcr = MCRVAL; com_port->fcr = FCRVAL; +#ifdef CONFIG_OMAP1510 + com_port->mdr1 = 0; /* select uart mode */ +#endif + } void NS16550_reinit (NS16550_t com_port, int baud_divisor) diff --git a/drivers/serial.c b/drivers/serial.c index 36d0e6e..f28ad80 100644 --- a/drivers/serial.c +++ b/drivers/serial.c @@ -42,12 +42,22 @@ static NS16550_t console = (NS16550_t) CFG_NS16550_COM4; #error no valid console defined #endif -int serial_init (void) +static int calc_divisor (void) { DECLARE_GLOBAL_DATA_PTR; +#ifdef CONFIG_OMAP1510 + /* If can't cleanly clock 115200 set div to 1 */ + if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) { + console->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */ + return (1); /* return 1 for base divisor */ + } +#endif + return (CFG_NS16550_CLK / 16 / gd->baudrate); +} - int clock_divisor = (CFG_NS16550_CLK + gd->baudrate * 8 ) - / (gd->baudrate * 16); +int serial_init (void) +{ + int clock_divisor = calc_divisor(); #ifdef CFG_NS87308 initialise_ns87308(); @@ -91,10 +101,9 @@ serial_tstc(void) void serial_setbrg (void) { - DECLARE_GLOBAL_DATA_PTR; - - int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate; + int clock_divisor; + clock_divisor = calc_divisor(); NS16550_reinit(console, clock_divisor); } |