diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index d186c5067faddc21baedbda486f63315da623be2..ca5d2a440e978decaaa7f0fa90bdf6a8260ea20c 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -317,7 +317,8 @@ config ARCH_SPARSEMEM_DEFAULT
 config MAX_ACTIVE_REGIONS
 	int
 	default "6" if (CPU_SUBTYPE_SHX3 && SPARSEMEM)
-	default "2" if (CPU_SUBTYPE_SH7722 && SPARSEMEM)
+	default "2" if SPARSEMEM && (CPU_SUBTYPE_SH7722 || \
+		       CPU_SUBTYPE_SH7785)
 	default "1"
 
 config ARCH_POPULATES_NODE_MAP