Pegasos2 has no current-speed property in
/pci@80000000/isa@C/serial@i2F8. As a result, console=ttyS0,115200 is
still required unless the patch below is used.

What is the correct way to restore console detection on pegasos2?

Index: linux-2.6.25-pegasos/arch/powerpc/platforms/chrp/setup.c
===================================================================

--- linux-2.6.25-pegasos.orig/arch/powerpc/platforms/chrp/setup.c
+++ linux-2.6.25-pegasos/arch/powerpc/platforms/chrp/setup.c

@@ -302,7 +305,7 @@ static void chrp_init_early(void)
        if (!property)
                goto out_put;
        if (!strcmp(property, "failsafe") || !strcmp(property, "serial"))
-               add_preferred_console("ttyS", 0, NULL);
+               add_preferred_console("ttyS", 0, "115200");
 out_put:
        of_node_put(node);
 }