diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
index 7fe7283..a8e31e7 100644
--- arch/arm/mach-bcm2708/bcm2708.c
+++ arch/arm/mach-bcm2708/bcm2708.c
@@ -689,6 +689,21 @@ static void bcm2708_power_off(void)
 	bcm2708_restart(0, "");
 }
 
+#ifdef CONFIG_RTC_DRV_PCF8523
+static struct i2c_board_info offboard_i2c_devices[] = {
+	{
+		/* Raspy Juice real-time clock chip */
+		I2C_BOARD_INFO("pcf8523", 0x68),
+	},
+};
+
+#if defined(CONFIG_RTC_HCTOSYS) && \
+	(!defined(CONFIG_I2C_CHARDEV) || \
+	 !defined(CONFIG_I2C_BCM2708))
+#error "RTC_DRV_PCF8523 defined as kernel built-in, but I2C_CHARDEV and I2C_BMC2708 isn't: RTC_HCTOSYS will not work."
+#endif
+#endif
+
 void __init bcm2708_init(void)
 {
 	int i;
@@ -752,6 +767,15 @@ void __init bcm2708_init(void)
 	spi_register_board_info(bcm2708_spi_devices,
 			ARRAY_SIZE(bcm2708_spi_devices));
 #endif
+
+#ifdef CONFIG_RTC_DRV_PCF8523
+	i = 0;
+	/* test of Raspberry Pi Rev.2, where GPIO-header I2C busnum=1 */
+	if (system_rev >= 15)
+		i = 1;
+	i2c_register_board_info(i, offboard_i2c_devices,
+				ARRAY_SIZE(offboard_i2c_devices));
+#endif
 }
 
 #define TIMER_PERIOD DIV_ROUND_CLOSEST(STC_FREQ_HZ, HZ)