diff --git a/fdts/stm32mp157c-dhcom-pdk2-fw-config.dts b/fdts/stm32mp157c-dhcom-pdk2-fw-config.dts
new file mode 100644
index 0000000..6a5a192
--- /dev/null
+++ b/fdts/stm32mp157c-dhcom-pdk2-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
+/*
+ * Copyright (c) 2022 DH electronics GmbH
+ */
+
+#define DDR_SIZE 0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"