ARM: msm: Add support for MSM8974 SoC

Add support for the Snapdragon 800 MSM8974 SoC, used on the Dragonboard
and others. Board support added in separate patch.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
[olof: split off SoC support in separate patch]
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/boot/dts/qcom-msm8974.dtsi

@@ -0,0 +1,33 @@
+/dts-v1/;
+
+#include "skeleton.dtsi"
+
+/ {
+	model = "Qualcomm MSM8974";
+	compatible = "qcom,msm8974";
+	interrupt-parent = <&intc>;
+
+	soc: soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		compatible = "simple-bus";
+
+		intc: interrupt-controller@f9000000 {
+			compatible = "qcom,msm-qgic2";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			reg = <0xf9000000 0x1000>,
+			      <0xf9002000 0x1000>;
+		};
+
+		timer {
+			compatible = "arm,armv7-timer";
+			interrupts = <1 2 0xf08>,
+				     <1 3 0xf08>,
+				     <1 4 0xf08>,
+				     <1 1 0xf08>;
+			clock-frequency = <19200000>;
+		};
+	};
+};

arch/arm/mach-msm/Kconfig

@@ -58,9 +58,18 @@ config ARCH_MSM8960
 	select GPIO_MSM_V2
 	select MSM_SCM if SMP
 
+config ARCH_MSM8974
+	bool "MSM8974"
+	select ARM_GIC
+	select CPU_V7
+	select HAVE_ARM_ARCH_TIMER
+	select HAVE_SMP
+	select MSM_SCM if SMP
+	select USE_OF
+
 config ARCH_MSM_DT
 	def_bool y
-	depends on (ARCH_MSM8X60 || ARCH_MSM8960)
+	depends on (ARCH_MSM8X60 || ARCH_MSM8960 || ARCH_MSM8974)
 	select SPARSE_IRQ
 	select USE_OF