diff options
Diffstat (limited to 'drivers/serial/sh-sci.c')
| -rw-r--r-- | drivers/serial/sh-sci.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 68c7f6cfd728..a88699051136 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -897,11 +897,21 @@ static void sci_shutdown(struct uart_port *port) static void sci_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old) { - unsigned int status, baud, smr_val; + unsigned int status, baud, smr_val, max_baud; int t = -1; - baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); - if (likely(baud)) + /* + * earlyprintk comes here early on with port->uartclk set to zero. + * the clock framework is not up and running at this point so here + * we assume that 115200 is the maximum baud rate. please note that + * the baud rate is not programmed during earlyprintk - it is assumed + * that the previous boot loader has enabled required clocks and + * setup the baud rate generator hardware for us already. + */ + max_baud = port->uartclk ? port->uartclk / 16 : 115200; + + baud = uart_get_baud_rate(port, termios, old, 0, max_baud); + if (likely(baud && port->uartclk)) t = SCBRR_VALUE(baud, port->uartclk); do { |