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author | Jon Loeliger <jdl@freescale.com> | 2008-07-10 12:05:32 -0500 |
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committer | Jon Loeliger <jdl@freescale.com> | 2008-07-10 12:05:32 -0500 |
commit | 859f24350e6e4313626f85161dd03f025a4dac59 (patch) | |
tree | a025f68619045556e662326c8e1cbc147f9b633e /drivers/serial | |
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')
-rw-r--r-- | drivers/serial/serial.c | 7 | ||||
-rw-r--r-- | drivers/serial/serial_pl010.c | 8 |
2 files changed, 12 insertions, 3 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) diff --git a/drivers/serial/serial_pl010.c b/drivers/serial/serial_pl010.c index 417b6ae..134ed09 100644 --- a/drivers/serial/serial_pl010.c +++ b/drivers/serial/serial_pl010.c @@ -29,6 +29,7 @@ /* Should be fairly simple to make it work with the PL010 as well */ #include <common.h> +#include <watchdog.h> #ifdef CFG_PL010_SERIAL @@ -137,7 +138,8 @@ void serial_setbrg (void) static void pl010_putc (int portnum, char c) { /* Wait until there is space in the FIFO */ - while (IO_READ (port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_TXFF); + while (IO_READ (port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_TXFF) + WATCHDOG_RESET(); /* Send the character */ IO_WRITE (port[portnum] + UART_PL01x_DR, c); @@ -148,7 +150,8 @@ static int pl010_getc (int portnum) unsigned int data; /* Wait until there is data in the FIFO */ - while (IO_READ (port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_RXFE); + while (IO_READ (port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_RXFE) + WATCHDOG_RESET(); data = IO_READ (port[portnum] + UART_PL01x_DR); @@ -164,6 +167,7 @@ static int pl010_getc (int portnum) static int pl010_tstc (int portnum) { + WATCHDOG_RESET(); return !(IO_READ (port[portnum] + UART_PL01x_FR) & UART_PL01x_FR_RXFE); } |