[LEDE-DEV] [PATCH 3/3] ramips-mt7621: add dts for UBNT-ERX-SFP

[Sven Roederer]

* use a copy and modify version of the  UBNT-ERX for the UBNT-ERX-SFP
* define i2c-gpio via DTS (Linux/Documentation/devicetree/bindings/i2c/i2c-gpio.txt)
* also define PCA9555 for PoE-switching in DTS
---
 target/linux/ramips/dts/UBNT-ERX-SFP.dts | 121 +++++++++++++++++++++++++++++++
 target/linux/ramips/image/mt7621.mk      |   2 +-
 2 files changed, 122 insertions(+), 1 deletion(-)
 create mode 100644 target/linux/ramips/dts/UBNT-ERX-SFP.dts

diff --git a/target/linux/ramips/dts/UBNT-ERX-SFP.dts b/target/linux/ramips/dts/UBNT-ERX-SFP.dts
new file mode 100644
index 0000000..808086a
--- /dev/null
+++ b/target/linux/ramips/dts/UBNT-ERX-SFP.dts
@@ -0,0 +1,121 @@
+#include <dt-bindings/input/input.h>
+
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+/ {
+	model = "UBNT-ERX-SFP";
+
+	memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x10000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 12 1>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	i2c-gpio {
+		compatible = "i2c-gpio";
+		gpios = <&gpio0 3 0 /* sda */
+		         &gpio0 4 0 /* scl */
+		        >;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		pca9555 at 25 {
+			compatible = "pca9555";
+			reg = <0x25>;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x22>;
+};
+
+&nand {
+	status = "okay";
+
+	partition at 0 {
+		label = "u-boot";
+		reg = <0x0 0x80000>;
+		read-only;
+	};
+
+	partition at 80000 {
+		label = "u-boot-env";
+		reg = <0x80000 0x60000>;
+		read-only;
+	};
+
+	factory: partition at e0000 {
+		label = "factory";
+		reg = <0xe0000 0x60000>;
+	};
+
+	partition at 140000 {
+		label = "kernel1";
+		reg = <0x140000 0x300000>;
+	};
+
+	partition at 440000 {
+		label = "kernel2";
+		reg = <0x440000 0x300000>;
+	};
+
+	partition at 740000 {
+		label = "ubi";
+		reg = <0x740000 0xf7c0000>;
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "uart2", "uart3", "i2c", "pcie", "rgmii2", "jtag";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&spi0 {
+	/* This board has 2Mb spi flash soldered in and visible
+	   from manufacturer's firmware.
+	   But this SoC shares spi and nand pins,
+	   and current driver does't handle this sharing well */
+	status = "disabled";
+
+	m25p80 at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <1>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition at 0 {
+			label = "spi";
+			reg = <0x0 0x200000>;
+			read-only;
+		};
+	};
+};
+
+&xhci {
+	status = "disabled";
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 22b04d9..f65449a 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -177,7 +177,7 @@ endef
 TARGET_DEVICES += ubnt-erx
 
 define Device/ubnt-erx-sfp
-  DTS := UBNT-ERX
+  DTS := UBNT-ERX-SFP
   FILESYSTEMS := squashfs
   KERNEL_SIZE := 3145728
   KERNEL := $(KERNEL_DTB) | uImage lzma
-- 
2.1.4