ramips: Add support for D-Link DCH-M225

D-Link DCH-M225 is based on Mediatek MT7620 with 64MB ram, 8MB flash,
3.5mm audio out support. but no ethernet and usb ports.
so you must default enable wifi.

Signed-off-by: Michael Lee <igvtee@gmail.com>

2 files changed, 191 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/DCH-M225.dts b/target/linux/ramips/dts/DCH-M225.dts
new file mode 100644
index 0000000000..3c2de8d5c5
--- /dev/null
+++ b/target/linux/ramips/dts/DCH-M225.dts
@@ -0,0 +1,184 @@
+/dts-v1/;
+
+/include/ "mt7620a.dtsi"
+
+/ {
+	compatible = "dlink,dch-m225", "ralink,mt7620a-soc";
+	model = "D-Link DCH-M225";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <100>;
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 11 1>;
+			linux,code = <0x211>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 2 1>;
+			linux,code = <0x198>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "dch-m225:green:power";
+			gpios = <&gpio1 5 1>;
+		};
+
+		status {
+			label = "dch-m225:red:status";
+			gpios = <&gpio1 0 1>;
+		};
+	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "Audio-I2S";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,bitclock-master = <&dailink0_master>;
+		simple-audio-card,frame-master = <&dailink0_master>;
+		simple-audio-card,widgets =
+			"Headphone", "Headphones";
+		simple-audio-card,routing =
+			"Headphones", "HP_L",
+			"Headphones", "HP_R";
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,hp-det-gpio = <&gpio0 14 1>;
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s>;
+		};
+
+		dailink0_master: simple-audio-card,codec {
+			sound-dai = <&codec>;
+		};
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&i2c {
+	status = "okay";
+
+	codec: wm8960@1a {
+		#sound-dai-cells = <0>;
+		compatible = "wlf,wm8960";
+		reg = <0x1a>;
+
+		wlf,shared-lrclk;
+	};
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&gpio_i2s_pins>, <&wm8960_mclk_pins>;
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		linux,modalias = "m25p80";
+		spi-max-frequency = <80000000>;
+		m25p,fast-read;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x4000>;
+			read-only;
+		};
+
+		factory: partition@34000 {
+			label = "factory";
+			reg = <0x34000 0x4000>;
+			read-only;
+		};
+
+		nvram: partition@38000 {
+			label = "nvram";
+			reg = <0x38000 0x8000>;
+			read-only;
+		};
+
+		partition@40000 {
+			label = "devconf";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "upgrade_rec";
+			reg = <0x50000 0x100000>;
+			read-only;
+		};
+
+		partition@150000 {
+			label = "firmware";
+			reg = <0x150000 0x6b0000>;
+		};
+	};
+};
+
+&gdma {
+	status = "okay";
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wdt", "rgmii1";
+			ralink,function = "gpio";
+		};
+
+		pa {
+			ralink,group = "pa";
+			ralink,function = "pa";
+		};
+
+		wm8960_mclk_pins: wm8960_mclk {
+			wm8960_mclk {
+				ralink,group = "mdio";
+				ralink,function = "refclk";
+			};
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x4>;
+};
+
+&gsw {
+	ralink,port4 = "ephy";
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
+
diff --git a/target/linux/ramips/dts/mt7620a.dtsi b/target/linux/ramips/dts/mt7620a.dtsi
index 641d248e60..96966b4647 100644
--- a/target/linux/ramips/dts/mt7620a.dtsi
+++ b/target/linux/ramips/dts/mt7620a.dtsi
@@ -323,6 +323,13 @@
 			};
 		};
 
+		gpio_i2s_pins: gpio_i2s {
+			gpio_i2s {
+				ralink,group = "uartf";
+				ralink,function = "gpio i2s";
+			};
+		};
+
 		spi_pins: spi {
 			spi {
 				ralink,group = "spi";