diff --git a/arch/sh/boards/se/7206/setup.c b/arch/sh/boards/se/7206/setup.c
index 499a3e9..5b3ee08 100644
--- a/arch/sh/boards/se/7206/setup.c
+++ b/arch/sh/boards/se/7206/setup.c
@@ -39,6 +39,7 @@
 static struct heartbeat_data heartbeat_data = {
 	.bit_pos	= heartbeat_bit_pos,
 	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),
+	.regsize	= 32,
 };
 
 static struct resource heartbeat_resources[] = {