ramips: add support for HiWiFi HC5962

This patch adds supports for the HiWiFi HC5962(gee4) http://www.hiwifi.com

Short specification:

 - MT7621AT + MT7612EN + 7603EN
 - 256MB DDR3 RAM
 - 128MB NAND flash
 - 1+3 x 1000M Ethernet
 - 1x USB 2.0 port. 1x USB 3.0 port.
 - reset button
 - UART pad on PCB (JP3: TX, RX, GND, 3.3V)

Flash instruction:

1, Download lede-ramips-mt7621-hc5962-squashfs-factory.bin
2, Login as root via SSH on 192.168.199.1 and then copy factory.bin(using wget or nc or...) to /tmp/
3, use the following commands:
   $ mtd write /tmp/lede-ramips-mt7621-hc5962-squashfs-factory.bin firmware
   $ mtd erase firmware_backup && reboot
After reboot you should be able to login as root via SSH on 192.168.1.1

Signed-off-by: ZengFei Zhang <zhangzengfei@kunteng.org>

1 files changed, 147 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/HC5962.dts b/target/linux/ramips/dts/HC5962.dts
new file mode 100644
index 0000000000..7619e679b6
--- /dev/null
+++ b/target/linux/ramips/dts/HC5962.dts
@@ -0,0 +1,147 @@
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "HiWiFi HC5962";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x10000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status {
+			label = "hc5962:white:status";
+			gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+		};
+
+		system {
+			label = "hc5962:red:system";
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&nand {
+	status = "okay";
+
+	partition@0 {
+		label = "u-boot";
+		reg = <0x0 0x80000>;
+		read-only;
+	};
+
+	partition@80000 {
+		label = "debug";
+		reg = <0x80000 0x80000>;
+		read-only;
+	};
+
+	factory: partition@100000 {
+		label = "factory";
+		reg = <0x100000 0x40000>;
+		read-only;
+	};
+
+	partition@140000 {
+		label = "kernel";
+		reg = <0x140000 0x200000>;
+	};
+
+	partition@340000 {
+		label = "ubi";
+		reg = <0x340000 0x1E00000>;
+	};
+
+	partition@2140000 {
+		label = "hw_panic";
+		reg = <0x2140000 0x80000>;
+		read-only;
+	};
+
+	partition@21c0000 {
+		label = "bdinfo";
+		reg = <0x21c0000 0x80000>;
+		read-only;
+	};
+
+	partition@2240000 {
+		label = "backup";
+		reg = <0x2240000 0x80000>;
+		read-only;
+	};
+
+	partition@22c0000 {
+		label = "overly";
+		reg = <0x22c0000 0x1000000>;
+	};
+
+	partition@32c0000 {
+		label = "firmware_backup";
+		reg = <0x32c0000 0x2000000>;
+	};
+
+	partition@52c0000 {
+		label = "oem";
+		reg = <0x52c0000 0x200000>;
+	};
+
+	partition@54c0000 {
+		label = "opt";
+		reg = <0x54c0000 0x2ac0000>;
+	};
+};
+
+&pcie {
+	status = "okay";
+
+	pcie0 {
+		mt76@0,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x0000>;
+			ieee80211-freq-limit = <2400000 2500000>;
+		};
+	};
+
+	pcie1 {
+		mt76@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			ieee80211-freq-limit = <5000000 6000000>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "uart3", "jtag";
+			ralink,function = "gpio";
+		};
+	};
+};