[RFC v2 6/7] MIPS: ath79: add initial support for Dragino MS14 (Dragino 2)

[Antony Pavlov <antonynpavlov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Currently only the UART, SPI-flash and LEDs are supported.

Links:

    * http://www.dragino.com/products/mother-board/item/71-ms14-p.html
    * https://wiki.openwrt.org/toh/dragino/ms14

Signed-off-by: Antony Pavlov <antonynpavlov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Gabor Juhos <juhosg-p3rKhJxN3npAfugRpC6u6w@public.gmane.org>
Cc: Alban Bedel <albeu-GANU6spQydw@public.gmane.org>
Cc: linux-mips-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
---
 arch/mips/ath79/Kconfig                 |  5 +++
 arch/mips/boot/dts/qca/Makefile         |  1 +
 arch/mips/boot/dts/qca/dragino_ms14.dts | 73 +++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+)

diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index 4fd53ae..2797581 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -77,6 +77,11 @@ choice
 	help
 	  Select a devicetree that should be built into the kernel.
 
+	config DTB_DRAGINO_MS14
+		bool "Dragino MS14 (Dragino 2)"
+		select BUILTIN_DTB
+		select SOC_AR933X
+
 	config DTB_TL_MR3020
 		bool "TL-MR3020"
 		select BUILTIN_DTB
diff --git a/arch/mips/boot/dts/qca/Makefile b/arch/mips/boot/dts/qca/Makefile
index ae47e35..dfba4d2 100644
--- a/arch/mips/boot/dts/qca/Makefile
+++ b/arch/mips/boot/dts/qca/Makefile
@@ -2,6 +2,7 @@
 dtb-$(CONFIG_ATH79)			+= ar9132_tl_wr1043nd_v1.dtb
 
 # Select a DTB to build in the kernel
+obj-$(CONFIG_DTB_DRAGINO_MS14)		+= dragino_ms14.dtb.o
 obj-$(CONFIG_DTB_TL_MR3020)		+= tl_mr3020.dtb.o
 obj-$(CONFIG_DTB_TL_WR1043ND_V1)	+= ar9132_tl_wr1043nd_v1.dtb.o
 
diff --git a/arch/mips/boot/dts/qca/dragino_ms14.dts b/arch/mips/boot/dts/qca/dragino_ms14.dts
new file mode 100644
index 0000000..ec4dc64
--- /dev/null
+++ b/arch/mips/boot/dts/qca/dragino_ms14.dts
@@ -0,0 +1,73 @@
+/dts-v1/;
+
+#include "ar9331.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Dragino MS14 (Dragino 2)";
+	compatible = "dragino,ms14";
+
+	aliases {
+		serial0 = &uart;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x4000000>;
+	};
+
+
+	leds {
+		compatible = "gpio-leds";
+
+		wlan {
+			label = "dragino2:red:wlan";
+			gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		lan {
+			label = "dragino2:red:lan";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		wan {
+			label = "dragino2:red:wan";
+			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		system {
+			label = "dragino2:red:system";
+			gpios = <&gpio 28 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <25000000>;
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&spi {
+	num-chipselects = <1>;
+	status = "okay";
+
+	/* Winbond 25Q128BVFG SPI flash */
+	spiflash: w25q128@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "winbond,w25q128", "jedec,spi-nor";
+		spi-max-frequency = <104000000>;
+		reg = <0>;
+	};
+};
-- 
2.6.2

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