[PATCH] Add 4xx GPIO functions

[platform/kernel/u-boot.git] / doc / README.serial_multi

diff --git a/doc/README.serial_multi b/doc/README.serial_multi
index a8d48fc..40f7815 100644 (file)
--- a/doc/README.serial_multi
+++ b/doc/README.serial_multi
@@ -52,3 +52,29 @@ PPC4XX Specific
        setenv stdout serial0
        setenv stderr serial0
        setenv stdin serial0
+
+MPC5xxx Specific
+================
+
+Up to two PSCs can be used as console.
+
+Support for hardware handshake has not been implemented yet.
+
+*) The first (default) console port is defined by:
+       #define CONFIG_PSC_CONSOLE <PSC number>
+
+*) The second (alternative) console port is defined by:
+       #define CONFIG_PSC_CONSOLE2 <PSC number>
+
+*) Commands to switch to the second console:
+       setenv stdout serial1
+       setenv stderr serial1
+       setenv stdin serial1
+
+*) Commands to switch to the first console:
+       setenv stdout serial0
+       setenv stderr serial0
+       setenv stdin serial0
+
+*) If a file descriptor is set to "serial" then the
+   current serial device will be used.