diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/serial.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c index 4ccaee28b0..8bbfcf9c0c 100644 --- a/drivers/serial/serial.c +++ b/drivers/serial/serial.c @@ -124,8 +124,6 @@ static NS16550_t serial_ports[4] = { static int calc_divisor (NS16550_t port) { - uint32_t clk_divisor; - #ifdef CONFIG_OMAP1510 /* If can't cleanly clock 115200 set div to 1 */ if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) { @@ -149,15 +147,11 @@ static int calc_divisor (NS16550_t port) /* Compute divisor value. Normally, we should simply return: * CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate - * but we need to round that value by adding 0.5 (2/4). + * but we need to round that value by adding 0.5. * Rounding is especially important at high baud rates. */ - clk_divisor = (((4 * CFG_NS16550_CLK) / - (MODE_X_DIV * gd->baudrate)) + 2) / 4; - - debug("NS16550 clock divisor = %d\n", clk_divisor); - - return clk_divisor; + return (CFG_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) / + (MODE_X_DIV * gd->baudrate); } #if !defined(CONFIG_SERIAL_MULTI) |