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| author | Markus Klotzbuecher <mk@denx.de> | 2008-07-10 10:26:07 +0200 |
|---|---|---|
| committer | Markus Klotzbuecher <mk@denx.de> | 2008-07-10 10:26:07 +0200 |
| commit | 794a5924972fc8073616e98a2668da4a5f9aea90 (patch) | |
| tree | dd0db39b3e183b5bcb0300d5377d7a0d5ac5fd0c /drivers/serial/serial.c | |
| parent | f2aeecc320f5b181b30effcaa67683aec8d5a843 (diff) | |
| parent | 4188f0491886b3b486164e819c0a83fdb97efd7d (diff) | |
| download | u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.zip u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.tar.gz u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.tar.bz2 | |
Merge branch 'master' of git://www.denx.de/git/u-boot
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) |