diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig
index dcc1af8..99e2d47 100644
--- a/arch/sh/boards/Kconfig
+++ b/arch/sh/boards/Kconfig
@@ -121,7 +121,7 @@
 	bool "RTS7751R2D"
 	depends on CPU_SUBTYPE_SH7751R
 	select SYS_SUPPORTS_PCI
-	select IO_TRAPPED
+	select IO_TRAPPED if MMU
 	help
 	  Select RTS7751R2D if configuring for a Renesas Technology
 	  Sales SH-Graphics board.
@@ -145,13 +145,13 @@
 	bool "Highlander"
 	depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
 	select SYS_SUPPORTS_PCI
-	select IO_TRAPPED
+	select IO_TRAPPED if MMU
 
 config SH_SH7785LCR
 	bool "SH7785LCR"
 	depends on CPU_SUBTYPE_SH7785
 	select SYS_SUPPORTS_PCI
-	select IO_TRAPPED
+	select IO_TRAPPED if MMU
 
 config SH_SH7785LCR_29BIT_PHYSMAPS
 	bool "SH7785LCR 29bit physmaps"
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 0454f8d..ef21734 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -228,12 +228,6 @@
 unsigned long onchip_remap(unsigned long addr, unsigned long size,
 			   const char *name);
 extern void onchip_unmap(unsigned long vaddr);
-#else
-#define __ioremap(offset, size, flags)	((void __iomem *)(offset))
-#define __iounmap(addr)			do { } while (0)
-#define onchip_remap(addr, size, name)	(addr)
-#define onchip_unmap(addr)		do { } while (0)
-#endif /* CONFIG_MMU */
 
 static inline void __iomem *
 __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
@@ -268,6 +262,12 @@
 
 	return __ioremap(offset, size, flags);
 }
+#else
+#define onchip_remap(addr, size, name)		(addr)
+#define onchip_unmap(addr)			do { } while (0)
+#define __ioremap_mode(offset, size, flags)	((void __iomem *)(offset))
+#define __iounmap(addr)				do { } while (0)
+#endif /* CONFIG_MMU */
 
 #define ioremap(offset, size)				\
 	__ioremap_mode((offset), (size), 0)