diff --git a/arch/arm/mach-uniphier/boards.c b/arch/arm/mach-uniphier/boards.c
index db7d192d68ef141454513185a33d1cebc6d69590..e3b933502230489e374354b127eb0cc0355bee58 100644
--- a/arch/arm/mach-uniphier/boards.c
+++ b/arch/arm/mach-uniphier/boards.c
@@ -199,7 +199,7 @@ static const struct uniphier_board_data uniphier_ld21_data = {
 		.size = 0x40000000,
 		.width = 32,
 	},
-	.flags = UNIPHIER_BD_BOARD_LD21_GLOBAL,
+	.flags = UNIPHIER_BD_DRAM_SPARSE | UNIPHIER_BD_BOARD_LD21_GLOBAL,
 };
 #endif