[U-Boot-Users] [PATCH] IXP: Add full baud-rate support for ixp42x, ixp45x and ixp46x
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Sat Dec 8 16:35:28 CET 2007
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
diff --git a/cpu/ixp/serial.c b/cpu/ixp/serial.c
index 2015958..1f13077 100644
--- a/cpu/ixp/serial.c
+++ b/cpu/ixp/serial.c
@@ -31,25 +31,22 @@
#include <common.h>
#include <asm/arch/ixp425.h>
+/*
+ * 14.7456 MHz
+ * Baud Rate = --------------
+ * 16 x Divisor
+ */
+#define SERIAL_CLOCK 921600
+
DECLARE_GLOBAL_DATA_PTR;
void serial_setbrg (void)
{
unsigned int quot = 0;
int uart = CFG_IXP425_CONSOLE;
-
- if (gd->baudrate == 1200)
- quot = 192;
- else if (gd->baudrate == 9600)
- quot = 96;
- else if (gd->baudrate == 19200)
- quot = 48;
- else if (gd->baudrate == 38400)
- quot = 24;
- else if (gd->baudrate == 57600)
- quot = 16;
- else if (gd->baudrate == 115200)
- quot = 8;
+
+ if(gd->baudrate < SERIAL_CLOCK && SERIAL_CLOCK % gd->baudrate == 0)
+ quot = SERIAL_CLOCK / gd->baudrate;
else
hang ();
@@ -65,7 +62,6 @@ void serial_setbrg (void)
IER(uart) = IER_UUE;
}
-
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
--
1.5.3.7
More information about the U-Boot
mailing list