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-rw-r--r--doc/README.serial_multi17
1 files changed, 17 insertions, 0 deletions
diff --git a/doc/README.serial_multi b/doc/README.serial_multi
index 1d73376b2c7..a8d48fc4d99 100644
--- a/doc/README.serial_multi
+++ b/doc/README.serial_multi
@@ -2,6 +2,8 @@ The support for multiple serial interfaces as implemented is mainly
intended to allow for modem dial-in / dial-out while still being able
to use a serial console on a (different) serial port.
+MPC8XX Specific
+===============
At the moment, the ports must be split on a SMC and a SCC port on a
8xx processor; other configurations are not (yet) supported.
@@ -35,3 +37,18 @@ just after switching the console:
After that press 'enter' at the SCC console. Note that baudrates <38400
are not allowed on LWMON with watchdog enabled (see CFG_BAUDRATE_TABLE in
include/configs/lwmon.h).
+
+
+PPC4XX Specific
+===============
+*) The default console is UART0
+
+*) The console can be switched to UART1 by any of the following commands:
+ setenv stdout serial1
+ setenv stderr serial1
+ setenv stdin serial1
+
+*) The console can be switched to UART0 by any of the following commands:
+ setenv stdout serial0
+ setenv stderr serial0
+ setenv stdin serial0