9 files changed, 123 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index cd1c5b04890a..6f61798a109f 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_MESON) += amlogic-c3-c302x-aw409.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-a1-ad401.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-axg-jethome-jethub-j100.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-axg-jethome-jethub-j110-rev-2.dtb
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409.dts b/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409.dts
new file mode 100644
index 000000000000..edce8850b338
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-c3-c302x-aw409.dts
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2021 Amlogic, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "amlogic-c3.dtsi"
+
+/ {
+	model = "Amlogic C302 aw409 Development Board";
+	compatible = "amlogic,aw409", "amlogic,c3";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	aliases {
+		serial0 = &uart_b;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x10000000>;
+	};
+};
+
+&uart_b {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
new file mode 100644
index 000000000000..60ad4f3eef9d
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2021 Amlogic, Inc. All rights reserved.
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x0>;
+			enable-method = "psci";
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x1>;
+			enable-method = "psci";
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	xtal: xtal-clk {
+		compatible = "fixed-clock";
+		clock-frequency = <24000000>;
+		clock-output-names = "xtal";
+		#clock-cells = <0>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		gic: interrupt-controller@fff01000 {
+			compatible = "arm,gic-400";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x0 0xfff01000 0 0x1000>,
+			      <0x0 0xfff02000 0 0x2000>,
+			      <0x0 0xfff04000 0 0x2000>,
+			      <0x0 0xfff06000 0 0x2000>;
+			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+		};
+
+		apb4: bus@fe000000 {
+			compatible = "simple-bus";
+			reg = <0x0 0xfe000000 0x0 0x480000>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
+
+			uart_b: serial@7a000 {
+				compatible = "amlogic,meson-s4-uart",
+					   "amlogic,meson-ao-uart";
+				reg = <0x0 0x7a000 0x0 0x18>;
+				interrupts = <GIC_SPI 169 IRQ_TYPE_EDGE_RISING>;
+				status = "disabled";
+				clocks = <&xtal>, <&xtal>, <&xtal>;
+				clock-names = "xtal", "pclk", "baud";
+			};
+
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index eed96f262844..c8f344596285 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -37,6 +37,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
index b984950591e2..768d0ed78dbe 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
@@ -106,6 +106,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index f58fd2a6fe61..543e70669df5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -51,6 +51,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
index 431572b384db..86e6ceb31d5e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
@@ -106,6 +106,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 11f89bfecb56..2673f0dbafe7 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -133,6 +133,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
index 617d322af0df..643f94d9d08e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
@@ -89,6 +89,7 @@
 		l2: l2-cache0 {
 			compatible = "cache";
 			cache-level = <2>;
+			cache-unified;
 		};
 	};