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| author | Jon Loeliger <jdl@freescale.com> | 2008-07-10 12:05:32 -0500 |
|---|---|---|
| committer | Jon Loeliger <jdl@freescale.com> | 2008-07-10 12:05:32 -0500 |
| commit | 859f24350e6e4313626f85161dd03f025a4dac59 (patch) | |
| tree | a025f68619045556e662326c8e1cbc147f9b633e /drivers/serial/serial.c | |
| parent | 3473ab737282b08ad61841fcbb14c4d264a93a8e (diff) | |
| parent | e0320b1ebec13755911a53b0af12cbf3e5e49a65 (diff) | |
| download | u-boot-imx-859f24350e6e4313626f85161dd03f025a4dac59.zip u-boot-imx-859f24350e6e4313626f85161dd03f025a4dac59.tar.gz u-boot-imx-859f24350e6e4313626f85161dd03f025a4dac59.tar.bz2 | |
Merge commit 'wd/master'
Diffstat (limited to 'drivers/serial/serial.c')
| -rw-r--r-- | drivers/serial/serial.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c index 76425d8..182ca2d 100644 --- a/drivers/serial/serial.c +++ b/drivers/serial/serial.c @@ -144,8 +144,13 @@ static int calc_divisor (NS16550_t port) #else #define MODE_X_DIV 16 #endif - return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate); + /* 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 or 8/16. + * Rounding is especially important at high baud rates. + */ + return (((16 * CFG_NS16550_CLK) / MODE_X_DIV / gd->baudrate) + 8) / 16; } #if !defined(CONFIG_SERIAL_MULTI) |