ramips: add support for XiaoYu XY-C5

Hardware:
SoC:      MT7621A
Flash:    32 MiB
RAM:      512 MiB
Ethernet: built-in switch
USB:      1x USB3.0
SATA:     ASM1060, 1 SATA port

Flash instruction (TFTP):
1. Set PC to fixed ip address 192.168.173.22
2. Download *-sysupgrade.bin image and rename it to firmware.img
3. Start a tftp server with the image file in its root directory
4. Turn off the router
5. Turn on router,press the reset button and wait ~15 seconds
6. Release the reset button and after a short time
   the firmware should be transferred from the tftp server
7. Wait ~3 minutes to complete recovery.

Signed-off-by: Qi Jiang <rushx@live.cn>
[squash commits, add label-mac-device, fix sign-off style]
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

target/linux/ramips/base-files/etc/board.d/02_network

@@ -88,6 +88,7 @@ ramips_setup_interfaces()
 	wavlink,wl-wn575a3|\
 	xiaomi,miwifi-mini|\
 	xiaomi,miwifi-nano|\
+	xiaoyu,xy-c5|\
 	xzwifi,creativebox-v1|\
 	youku,yk-l2|\
 	youku,yk1|\

target/linux/ramips/dts/mt7621_xiaoyu_xy-c5.dts

@@ -0,0 +1,104 @@
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "xiaoyu,xy-c5", "mediatek,mt7621-soc";
+	model = "XiaoYu XY-C5";
+
+	aliases {
+		led-boot = &led_sys;
+		led-failsafe = &led_sys;
+		led-running = &led_sys;
+		led-upgrade = &led_sys;
+		label-mac-device = &ethernet;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		work {
+			label = "xy-c5:green:work";
+			gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+		};
+
+		led_sys: sys {
+			label = "xy-c5:green:sys";
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-boot-env";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0x1fb0000>;
+			};
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x4>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "uart3", "wdt";
+			ralink,function = "gpio";
+		};
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -768,6 +768,15 @@ define Device/xiaomi_mir3p
 endef
 TARGET_DEVICES += xiaomi_mir3p
 
+define Device/xiaoyu_xy-c5
+  MTK_SOC := mt7621
+  IMAGE_SIZE := 32448k
+  DEVICE_VENDOR := XiaoYu
+  DEVICE_MODEL := XY-C5
+  DEVICE_PACKAGES := kmod-ata-core kmod-ata-ahci kmod-usb3
+endef
+TARGET_DEVICES += xiaoyu_xy-c5
+
 define Device/xzwifi_creativebox-v1
   MTK_SOC := mt7621
   IMAGE_SIZE := 32448k