diff --git a/arch/arm/dts/r8a774e1-hihope-rzg2h-ex.dts b/arch/arm/dts/r8a774e1-hihope-rzg2h-ex.dts
new file mode 100644
index 0000000..8129959
--- /dev/null
+++ b/arch/arm/dts/r8a774e1-hihope-rzg2h-ex.dts
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the HiHope RZ/G2H sub board
+ *
+ * Copyright (C) 2020 Renesas Electronics Corp.
+ */
+
+#include "r8a774e1-hihope-rzg2h.dts"
+#include "hihope-rzg2-ex.dtsi"
+
+/ {
+	model = "HopeRun HiHope RZ/G2H with sub board";
+	compatible = "hoperun,hihope-rzg2-ex", "hoperun,hihope-rzg2h",
+		     "renesas,r8a774e1";
+};
+
+/* Set SW43 = ON and SW1001[7] = OFF for SATA port to be activated */
+&sata {
+	status = "okay";
+};