diff --git a/arch/sh/cchips/Kconfig b/arch/sh/cchips/Kconfig
index efde2edb5627809e232cbf1528b9d152f4659103..9659a0bc58dec40b9952cd8b8cd15dbb3dee7c32 100644
--- a/arch/sh/cchips/Kconfig
+++ b/arch/sh/cchips/Kconfig
@@ -29,9 +29,9 @@ endchoice
 config HD64461_IRQ
 	int "HD64461 IRQ"
 	depends on HD64461
-	default "36"
+	default "52"
 	help
-	  The default setting of the HD64461 IRQ is 36.
+	  The default setting of the HD64461 IRQ is 52.
 
 	  Do not change this unless you know what you are doing.
 
diff --git a/arch/sh/include/asm/hd64461.h b/arch/sh/include/asm/hd64461.h
index afb24cb034b114c91bb633f280b52880b988d3dd..d2c485fa333b5180a7b76a291e8e70a83bfa2231 100644
--- a/arch/sh/include/asm/hd64461.h
+++ b/arch/sh/include/asm/hd64461.h
@@ -229,7 +229,7 @@
 #define	HD64461_NIMR		HD64461_IO_OFFSET(0x5002)
 
 #define	HD64461_IRQBASE		OFFCHIP_IRQ_BASE
-#define	OFFCHIP_IRQ_BASE	64
+#define	OFFCHIP_IRQ_BASE	(64 + 16)
 #define	HD64461_IRQ_NUM		16
 
 #define	HD64461_IRQ_UART	(HD64461_IRQBASE+5)