ARM: dts: tango4: Initial device trees

This device tree was tested on a Sigma Designs SMP8758 Vantage-1172
Rev E1 development board.

Signed-off-by: Marc Gonzalez <[e-mail]>
Reviewed-by: Kevin Hilman <[e-mail]>
Signed-off-by: Olof Johansson <[e-mail]>

arch/arm/boot/dts/Makefile

···
 dtb-$(CONFIG_MACH_SUN9I) += \
 	sun9i-a80-optimus.dtb \
 	sun9i-a80-cubieboard4.dtb
+dtb-$(CONFIG_ARCH_TANGO) += \
+	tango4-vantage-1172.dtb
 dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
 	tegra20-harmony.dtb \
 	tegra20-iris-512.dtb \

arch/arm/boot/dts/tango4-common.dtsi

···
+/*
+ * Based on Mans Rullgard's Tango3 DT
+ * https://github.com/mansr/linux-tangox
+ */
+
+#define CPU_CLK 0
+#define SYS_CLK 1
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	periph_clk: periph_clk {
+		compatible = "fixed-factor-clock";
+		clocks = <&clkgen CPU_CLK>;
+		clock-mult = <1>;
+		clock-div  = <2>;
+		#clock-cells = <0>;
+	};
+
+	mpcore {
+		compatible = "simple-bus";
+		ranges = <0x00000000 0x20000000 0x2000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		scu@0 {
+			compatible = "arm,cortex-a9-scu";
+			reg = <0x0 0x100>;
+		};
+
+		twd@600 {
+			compatible = "arm,cortex-a9-twd-timer";
+			reg = <0x600 0x10>;
+			interrupts = <GIC_PPI 13 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&periph_clk>;
+			always-on;
+		};
+
+		gic: interrupt-controller@1000 {
+			compatible = "arm,cortex-a9-gic";
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			reg = <0x1000 0x1000>, <0x100 0x100>;
+		};
+	};
+
+	l2cc: l2-cache-controller@20100000 {
+		compatible = "arm,pl310-cache";
+		reg = <0x20100000 0x1000>;
+		cache-level = <2>;
+		cache-unified;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		interrupt-parent = <&irq0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		xtal: xtal {
+			compatible = "fixed-clock";
+			clock-frequency = <27000000>;
+			#clock-cells = <0>;
+		};
+
+		clkgen: clkgen@10000 {
+			compatible = "sigma,tango4-clkgen";
+			reg = <0x10000 0x40>;
+			clocks = <&xtal>;
+			#clock-cells = <1>;
+		};
+
+		tick-counter@10048 {
+			compatible = "sigma,tick-counter";
+			reg = <0x10048 0x4>;
+			clocks = <&xtal>;
+		};
+
+		uart: serial@10700 {
+			compatible = "ralink,rt2880-uart";
+			reg = <0x10700 0x30>;
+			interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
+			clock-frequency = <7372800>;
+			reg-shift = <2>;
+		};
+
+		eth0: ethernet@26000 {
+			compatible = "sigma,smp8734-ethernet";
+			reg = <0x26000 0x800>;
+			interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkgen SYS_CLK>;
+		};
+
+		intc: interrupt-controller@6e000 {
+			compatible = "sigma,smp8642-intc";
+			reg = <0x6e000 0x400>;
+			ranges = <0 0x6e000 0x400>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			irq0: irq0@000 {
+				reg = <0x000 0x100>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
+			irq1: irq1@100 {
+				reg = <0x100 0x100>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
+			irq2: irq2@300 {
+				reg = <0x300 0x100>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+			};
+		};
+	};
+};

arch/arm/boot/dts/tango4-smp8758.dtsi

···
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		enable-method = "sigma,tango4-smp";
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a9";
+			next-level-cache = <&l2cc>;
+			device_type = "cpu";
+			reg = <0>;
+		};
+
+		cpu1: cpu@1 {
+			compatible = "arm,cortex-a9";
+			next-level-cache = <&l2cc>;
+			device_type = "cpu";
+			reg = <1>;
+		};
+	};
+
+	pmu {
+		compatible = "arm,cortex-a9-pmu";
+		interrupt-affinity = <&cpu0>, <&cpu1>;
+		interrupts =
+			<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
+			<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};

arch/arm/boot/dts/tango4-vantage-1172.dts

···
+/dts-v1/;
+
+#include "tango4-smp8758.dtsi"
+#include "tango4-common.dtsi"
+
+/ {
+	model = "Sigma Designs SMP8758 Vantage-1172 Rev E1";
+	compatible = "sigma,vantage-1172", "sigma,smp8758", "sigma,tango4";
+
+	aliases {
+		serial = &uart;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x80000000>; /* 2 GB */
+	};
+
+	chosen {
+		stdout-path = "serial:115200n8";
+	};
+};
+
+&eth0 {
+	phy-connection-type = "rgmii";
+	phy-handle = <&eth0_phy>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* Atheros AR8035 */
+	eth0_phy: ethernet-phy@4 {
+		compatible = "ethernet-phy-id004d.d072",
+			     "ethernet-phy-ieee802.3-c22";
+		interrupts = <37 IRQ_TYPE_EDGE_RISING>;
+		reg = <4>;
+	};
+};