diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 3beb8f1..ce10d3d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1172,7 +1172,8 @@
 dtb-$(CONFIG_RCAR_GEN4) += \
 	r8a779a0-falcon-u-boot.dtb \
 	r8a779f0-spider-u-boot.dtb \
-	r8a779g0-white-hawk-u-boot.dtb
+	r8a779g0-white-hawk-u-boot.dtb \
+	r8a779h0-gray-hawk-u-boot.dtb
 
 dtb-$(CONFIG_TARGET_RZG2L) += \
 	r9a07g044l2-smarc.dts
diff --git a/arch/arm/dts/r8a779h0-gray-hawk-u-boot.dts b/arch/arm/dts/r8a779h0-gray-hawk-u-boot.dts
new file mode 100644
index 0000000..935ba94
--- /dev/null
+++ b/arch/arm/dts/r8a779h0-gray-hawk-u-boot.dts
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the Gray Hawk board
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include "r8a779h0-gray-hawk.dts"
+#include "r8a779h0-u-boot.dtsi"
+
+/ {
+	aliases {
+		spi0 = &rpc;
+	};
+};
+
+&pfc {
+	qspi0_pins: qspi0 {
+		groups = "qspi0_ctrl", "qspi0_data4";
+		function = "qspi0";
+	};
+};
+
+&rpc {
+	pinctrl-0 = <&qspi0_pins>;
+	pinctrl-names = "default";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	spi-max-frequency = <40000000>;
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "s25fs512s", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/mach-rmobile/Kconfig.rcar4 b/arch/arm/mach-rmobile/Kconfig.rcar4
index 3c8d683..e80dce1 100644
--- a/arch/arm/mach-rmobile/Kconfig.rcar4
+++ b/arch/arm/mach-rmobile/Kconfig.rcar4
@@ -50,10 +50,17 @@
 	help
 	  Support for Renesas R-Car Gen4 White Hawk platform
 
+config TARGET_GRAYHAWK
+	bool "Gray Hawk board"
+	imply R8A779H0
+	help
+	  Support for Renesas R-Car Gen4 Gray Hawk platform
+
 endchoice
 
 source "board/renesas/falcon/Kconfig"
 source "board/renesas/spider/Kconfig"
 source "board/renesas/whitehawk/Kconfig"
+source "board/renesas/grayhawk/Kconfig"
 
 endif