diff --git a/arch/arm/dts/r8a77960-salvator-x-u-boot.dts b/arch/arm/dts/r8a77960-salvator-x-u-boot.dts
new file mode 100644
index 0000000..a3f2d74
--- /dev/null
+++ b/arch/arm/dts/r8a77960-salvator-x-u-boot.dts
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the Salvator-X board
+ *
+ * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
+ */
+
+#include "r8a77960-salvator-x.dts"
+#include "r8a77960-u-boot.dtsi"
+
+&sdhi0 {
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr104;
+	max-frequency = <208000000>;
+};
+
+&sdhi2 {
+	mmc-hs400-1_8v;
+	max-frequency = <200000000>;
+};
+
+&sdhi3 {
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr104;
+	max-frequency = <208000000>;
+};
+
+&vcc_sdhi0 {
+	u-boot,off-on-delay-us = <20000>;
+};
+
+&vcc_sdhi3 {
+	u-boot,off-on-delay-us = <20000>;
+};