Sigma Designs Tango4 port

index 246473a244f6..2499295051d5 100644
@@ -605,6 +605,8 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 dtb-$(CONFIG_MACH_SUN9I) += \
 	sun9i-a80-optimus.dtb \
 	sun9i-a80-cubieboard4.dtb
+dtb-$(CONFIG_ARCH_TANGOX) += \
+	tango4-vantage-1172.dtb
 dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
 	tegra20-harmony.dtb \
 	tegra20-iris-512.dtb \

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new file mode 100644
index 000000000000..7ed88ee629fb
@@ -0,0 +1,31 @@
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		enable-method = "sigma,tango4-smp";
+
+		cpu0: cpu at 0 {
+			compatible = "arm,cortex-a9";
+			next-level-cache = <&l2cc>;
+			device_type = "cpu";
+			reg = <0>;
+		};
+
+		cpu1: cpu at 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>;
+	};
+};

new file mode 100644
index 000000000000..fcfac8231e7a
@@ -0,0 +1,29 @@
+/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";
+
+	memory at 80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x80000000>; /* 2 GB */
+	};
+};
+
+&eth0 {
+	phy-connection-type = "rgmii";
+	phy-handle = <&eth0_phy>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* Atheros AR8035 */
+	eth0_phy: ethernet-phy at 4 {
+		compatible = "ethernet-phy-id004d.d072",
+			     "ethernet-phy-ieee802.3-c22";
+		interrupts = <37 IRQ_TYPE_EDGE_RISING>;
+		reg = <4>;
+	};
+};

index b60e2b2369d2..67575fffc188 100644
@@ -1529,6 +1529,13 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mcoquelin/stm32.git
 N:	stm32
 F:	drivers/clocksource/armv7m_systick.c
 
+ARM/TANGO ARCHITECTURE
+M:	Marc Gonzalez <[email protected]>
+L:	linux-arm-kernel at lists.infradead.org
+S:	Maintained
+F:	arch/arm/mach-tango/
+F:	arch/arm/boot/dts/tango*
+
 ARM/TECHNOLOGIC SYSTEMS TS7250 MACHINE SUPPORT
 M:	Lennert Buytenhek <[email protected]>
 L:	linux-arm-kernel at lists.infradead.org (moderated for non-subscribers)

index 774dc59650c5..3fbe165d3c37 100644
@@ -934,6 +934,8 @@ source "arch/arm/mach-sunxi/Kconfig"
 
 source "arch/arm/mach-prima2/Kconfig"
 
+source "arch/arm/mach-tango/Kconfig"
+
 source "arch/arm/mach-tegra/Kconfig"
 
 source "arch/arm/mach-u300/Kconfig"

index 7451b447cc2d..e49840682d3d 100644
@@ -203,6 +203,7 @@ machine-$(CONFIG_ARCH_SOCFPGA)		+= socfpga
 machine-$(CONFIG_ARCH_STI)		+= sti
 machine-$(CONFIG_ARCH_STM32)		+= stm32
 machine-$(CONFIG_ARCH_SUNXI)		+= sunxi
+machine-$(CONFIG_ARCH_TANGO)		+= tango
 machine-$(CONFIG_ARCH_TEGRA)		+= tegra
 machine-$(CONFIG_ARCH_U300)		+= u300
 machine-$(CONFIG_ARCH_U8500)		+= ux500

new file mode 100644
index 000000000000..cfcc87995426
@@ -0,0 +1,12 @@
+config ARCH_TANGO
+	bool "Sigma Designs Tango4 (SMP87xx)" if ARCH_MULTI_V7
+	# Cortex-A9 MPCore r3p0, PL310 r3p2
+	select ARCH_HAS_HOLES_MEMORYMODEL
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_764369 if SMP
+	select ARM_ERRATA_775420
+	select ARM_GIC
+	select CLKSRC_TANGO_XTAL
+	select GENERIC_IRQ_CHIP
+	select HAVE_ARM_SCU
+	select HAVE_ARM_TWD

new file mode 100644
index 000000000000..0d7e2b5976e3
@@ -0,0 +1,2 @@
+asflags-y += -mcpu=cortex-a9
+obj-y += setup.o smc.o

new file mode 100644
index 000000000000..5d932ce3c1bd
@@ -0,0 +1,9 @@
+#include <linux/linkage.h>
+
+ENTRY(tango_smc)
+	push	{lr}
+	mov	ip, r1
+	dsb	/* This barrier is probably unnecessary */
+	smc	#0
+	pop	{pc}
+ENDPROC(tango_smc)