ARC: [axs101] Add support for AXS101 SDP (software development platform)

The AXS10x platforms consist of a mainboard with peripherals,
on which several daughter cards can be placed. The daughter cards
typically contain a CPU and memory.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

3 files changed, 323 insertions, 0 deletions

diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi
new file mode 100644
index 000000000000..6990ca45fc7b
--- /dev/null
+++ b/arch/arc/boot/dts/axc001.dtsi
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * Device tree for AXC001 770D/EM6/AS221 CPU card
+ * Note that this file only supports the 770D CPU
+ */
+
+/ {
+	compatible = "snps,arc";
+	clock-frequency = <750000000>;	/* 750 MHZ */
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpu_card {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		ranges = <0x00000000 0xf0000000 0x10000000>;
+
+		cpu_intc: arc700-intc@cpu {
+			compatible = "snps,arc700-intc";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		/*
+		 * this GPIO block ORs all interrupts on CPU card (creg,..)
+		 * to uplink only 1 IRQ to ARC core intc
+		 */
+		dw-apb-gpio@0x2000 {
+			compatible = "snps,dw-apb-gpio";
+			reg = < 0x2000 0x80 >;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ictl_intc: gpio-controller@0 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <30>;
+				reg = <0>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				interrupt-parent = <&cpu_intc>;
+				interrupts = <15>;
+			};
+		};
+
+		debug_uart: dw-apb-uart@0x5000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x5000 0x100>;
+			clock-frequency = <33333000>;
+			interrupt-parent = <&ictl_intc>;
+			interrupts = <19 4>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+
+		arcpmu0: pmu {
+			compatible = "snps,arc700-pct";
+		};
+	};
+
+	memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00000000 0x80000000 0x40000000>;
+		device_type = "memory";
+		reg = <0x00000000 0x20000000>;	/* 512MiB */
+	};
+};
diff --git a/arch/arc/boot/dts/axs101.dts b/arch/arc/boot/dts/axs101.dts
new file mode 100644
index 000000000000..6c3391da0e3b
--- /dev/null
+++ b/arch/arc/boot/dts/axs101.dts
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
+ *
+ * ARC AXS101 S/W development platform
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+/dts-v1/;
+
+/include/ "axc001.dtsi"
+/include/ "axs10x_mb.dtsi"
+
+/ {
+	compatible = "snps,axs101";
+
+	chosen {
+		bootargs = "console=tty0 console=ttyS3,115200n8 consoleblank=0";
+	};
+};
diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
new file mode 100644
index 000000000000..255c7121ea80
--- /dev/null
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -0,0 +1,223 @@
+/*
+ * Support for peripherals on the AXS10x mainboard
+ *
+ * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/ {
+	axs10x_mb {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00000000 0xe0000000 0x10000000>;
+		interrupt-parent = <&mb_intc>;
+
+		clocks {
+			i2cclk: i2cclk {
+				compatible = "fixed-clock";
+				clock-frequency = <50000000>;
+				#clock-cells = <0>;
+			};
+
+			apbclk: apbclk {
+				compatible = "fixed-clock";
+				clock-frequency = <50000000>;
+				#clock-cells = <0>;
+			};
+
+			mmcclk: mmcclk {
+				compatible = "fixed-clock";
+				clock-frequency = <50000000>;
+				#clock-cells = <0>;
+			};
+		};
+
+		/*
+		 * This INTC is actually connected to DW APB GPIO
+		 * which acts as a wire between MB INTC and CPU INTC.
+		 * GPIO INTC is configured in platform init code
+		 * and here we mimic direct connection from MB INTC to
+		 * CPU INTC, thus we set "interrupts = <7>" instead of
+		 * "interrupts = <12>"
+		 */
+		mb_intc: dw-apb-ictl@0x12000 {
+			#interrupt-cells = <1>;
+			compatible = "snps,dw-apb-ictl";
+			reg = < 0x12000 0x200 >;
+			interrupt-controller;
+			interrupt-parent = <&cpu_intc>;
+			interrupts = < 7 >;
+		};
+
+		ethernet@0x18000 {
+			#interrupt-cells = <1>;
+			compatible = "snps,dwmac";
+			reg = < 0x18000 0x2000 >;
+			interrupts = < 4 >;
+			interrupt-names = "macirq";
+			phy-mode = "rgmii";
+			snps,pbl = < 32 >;
+			clocks = <&apbclk>;
+			clock-names = "stmmaceth";
+		};
+
+		ehci@0x40000 {
+			compatible = "generic-ehci";
+			reg = < 0x40000 0x100 >;
+			interrupts = < 8 >;
+		};
+
+		ohci@0x60000 {
+			compatible = "generic-ohci";
+			reg = < 0x60000 0x100 >;
+			interrupts = < 8 >;
+		};
+
+		mmc@0x15000 {
+			compatible = "snps,dw-mshc";
+			reg = < 0x15000 0x400 >;
+			num-slots = < 1 >;
+			fifo-depth = < 16 >;
+			card-detect-delay = < 200 >;
+			clocks = <&apbclk>, <&mmcclk>;
+			clock-names = "biu", "ciu";
+			interrupts = < 7 >;
+			bus-width = < 4 >;
+		};
+
+		uart@0x20000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x20000 0x100>;
+			clock-frequency = <33333333>;
+			interrupts = <17>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+
+		uart@0x21000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x21000 0x100>;
+			clock-frequency = <33333333>;
+			interrupts = <18>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+
+		/* UART muxed with USB data port (ttyS3) */
+		uart@0x22000 {
+			compatible = "snps,dw-apb-uart";
+			reg = <0x22000 0x100>;
+			clock-frequency = <33333333>;
+			interrupts = <19>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+
+		i2c@0x1d000 {
+			compatible = "snps,designware-i2c";
+			reg = <0x1d000 0x100>;
+			clock-frequency = <400000>;
+			clocks = <&i2cclk>;
+			interrupts = <14>;
+		};
+
+		i2c@0x1e000 {
+			compatible = "snps,designware-i2c";
+			reg = <0x1e000 0x100>;
+			clock-frequency = <400000>;
+			clocks = <&i2cclk>;
+			interrupts = <15>;
+		};
+
+		i2c@0x1f000 {
+			compatible = "snps,designware-i2c";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x1f000 0x100>;
+			clock-frequency = <400000>;
+			clocks = <&i2cclk>;
+			interrupts = <16>;
+
+			eeprom@0x54{
+				compatible = "24c01";
+				reg = <0x54>;
+				pagesize = <0x8>;
+			};
+
+			eeprom@0x57{
+				compatible = "24c04";
+				reg = <0x57>;
+				pagesize = <0x8>;
+			};
+		};
+
+		gpio0:gpio@13000 {
+			compatible = "snps,dw-apb-gpio";
+			reg = <0x13000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			gpio0_banka: gpio-controller@0 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <32>;
+				reg = <0>;
+			};
+
+			gpio0_bankb: gpio-controller@1 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <8>;
+				reg = <1>;
+			};
+
+			gpio0_bankc: gpio-controller@2 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <8>;
+				reg = <2>;
+			};
+		};
+
+		gpio1:gpio@14000 {
+			compatible = "snps,dw-apb-gpio";
+			reg = <0x14000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			gpio1_banka: gpio-controller@0 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <30>;
+				reg = <0>;
+			};
+
+			gpio1_bankb: gpio-controller@1 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <10>;
+				reg = <1>;
+			};
+
+			gpio1_bankc: gpio-controller@2 {
+				compatible = "snps,dw-apb-gpio-port";
+				gpio-controller;
+				#gpio-cells = <2>;
+				snps,nr-gpios = <8>;
+				reg = <2>;
+			};
+		};
+	};
+};