diff -urN linux-2.6.23.orig/arch/powerpc/boot/dts/mpc8313erdb.dts linux-2.6.23/arch/powerpc/boot/dts/mpc8313erdb.dts
--- linux-2.6.23.orig/arch/powerpc/boot/dts/mpc8313erdb.dts	2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6.23/arch/powerpc/boot/dts/mpc8313erdb.dts	2007-12-01 13:16:55.000000000 +0100
@@ -54,12 +54,20 @@
 		};
 
 		i2c@3000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
 			device_type = "i2c";
 			compatible = "fsl-i2c";
 			reg = <3000 100>;
 			interrupts = <e 8>;
 			interrupt-parent = < &ipic >;
 			dfsrr;
+
+			rtc@68 {
+				device_type = "rtc";
+				compatible = "dallas,ds1339";
+				reg = <68>;
+			};
 		};
 
 		i2c@3100 {
diff -urN linux-2.6.23.orig/arch/powerpc/sysdev/fsl_soc.c linux-2.6.23/arch/powerpc/sysdev/fsl_soc.c
--- linux-2.6.23.orig/arch/powerpc/sysdev/fsl_soc.c	2007-10-09 22:31:38.000000000 +0200
+++ linux-2.6.23/arch/powerpc/sysdev/fsl_soc.c	2007-12-01 13:08:30.000000000 +0100
@@ -319,6 +319,12 @@
 	{"ricoh,rs5c372b", "rtc-rs5c372", "rs5c372b",},
 	{"ricoh,rv5c386",  "rtc-rs5c372", "rv5c386",},
 	{"ricoh,rv5c387a", "rtc-rs5c372", "rv5c387a",},
+	{"dallas,ds1307",  "rtc-ds1307",  "ds1307",},
+	{"dallas,ds1337",  "rtc-ds1307",  "ds1337",},
+	{"dallas,ds1338",  "rtc-ds1307",  "ds1338",},
+	{"dallas,ds1339",  "rtc-ds1307",  "ds1339",},
+	{"dallas,ds1340",  "rtc-ds1307",  "ds1340",},
+	{"stm,m41t00",     "rtc-ds1307",  "m41t00"},
 };
 
 static int __init of_find_i2c_driver(struct device_node *node, struct i2c_board_info *info)