diff --git a/cpu/mpc512x/cpu.c b/cpu/mpc512x/cpu.c
index 6421a51..bed77ac 100644
--- a/cpu/mpc512x/cpu.c
+++ b/cpu/mpc512x/cpu.c
@@ -138,11 +138,11 @@
 
 	do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
 	do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
-	do_fixup_by_path_u32(blob, cpu_path, "ref-frequency", CFG_MPC512X_CLKIN, 1);
 	do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
 	do_fixup_by_path_u32(blob, "/" OF_SOC, "bus-frequency", bd->bi_ipsfreq, 1);
-	do_fixup_by_path_u32(blob, "/" OF_SOC, "ref-frequency", CFG_MPC512X_CLKIN, 1);
-	do_fixup_by_path(blob, eth_path, "address", bd->bi_enetaddr, 6, 0);
 	do_fixup_by_path(blob, eth_path, "local-mac-address", bd->bi_enetaddr, 6, 0);
+
+	/* this is so old kernels with old device trees will boot */
+	do_fixup_by_path_u32(blob, "/" OF_SOC_OLD, "bus-frequency", bd->bi_ipsfreq, 0);
 }
 #endif