powerpc/powermac: Use sane default baudrate for SCC debugging

[linux-2.6-omap-h63xx.git] / arch / powerpc / platforms / powermac / udbg_scc.c

diff --git a/arch/powerpc/platforms/powermac/udbg_scc.c b/arch/powerpc/platforms/powermac/udbg_scc.c
index 47de4d3fc1674008f90dbf380e0971c6cb2417ac..572771fd84636aaaece971daa9a6648005b862ca 100644 (file)
--- a/arch/powerpc/platforms/powermac/udbg_scc.c
+++ b/arch/powerpc/platforms/powermac/udbg_scc.c
@@ -125,13 +125,23 @@ void udbg_scc_init(int force_scc)
        out_8(sccc, 0xc0);
 
        /* If SCC was the OF output port, read the BRG value, else
-        * Setup for 57600 8N1
+        * Setup for 38400 or 57600 8N1 depending on the machine
         */
        if (ch_def != NULL) {
                out_8(sccc, 13);
                scc_inittab[1] = in_8(sccc);
                out_8(sccc, 12);
                scc_inittab[3] = in_8(sccc);
+       } else if (machine_is_compatible("RackMac1,1")
+                  || machine_is_compatible("RackMac1,2")
+                  || machine_is_compatible("MacRISC4")) {
+               /* Xserves and G5s default to 57600 */
+               scc_inittab[1] = 0;
+               scc_inittab[3] = 0;
+       } else {
+               /* Others default to 38400 */
+               scc_inittab[1] = 0;
+               scc_inittab[3] = 1;
        }
 
        for (i = 0; i < sizeof(scc_inittab); ++i)