diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 9c743b1..ec8476d 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -150,6 +150,10 @@ static int __devinit clock_probe(struct platform_device *op, const struct of_dev
 	if (!model)
 		return -ENODEV;
 
+	/* Only the primary RTC has an address property */
+	if (!of_find_property(dp, "address", NULL))
+		return -ENODEV;
+
 	m48t59_rtc.resource = &op->resource[0];
 	if (!strcmp(model, "mk48t02")) {
 		/* Map the clock register io area read-only */