diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 569292c..e5801d9 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -308,6 +308,7 @@
 
 config NODES_SHIFT
 	int
+	default "3" if CPU_SUBTYPE_SHX3
 	default "1"
 	depends on NEED_MULTIPLE_NODES