ramips: add support for Ubiquiti EdgeRouter X-SFP

This patch adds support for the Ubiquiti EdgeRouter X-SFP and
improves support for the EdgeRouter X (PoE-passthrough).

Specification:
- SoC: MediaTek MT7621AT
- Flash: 256 MiB
- RAM: 265 MiB
- Ethernet: 5 x LAN (1000 Mbps)
- UART: 1 x UART on PCB (3.3V, RX, TX, GND) - 57600 8N1
- EdgeRouter X:
  - 1 x PoE-Passtrough (Eth4)
  - powered by Wallwart or passive PoE
- EdgeRouter X-SFP:
  - 5 x PoE-Out (24V, passive)
  - 1 x SFP (unknown status)
  - powered by Wallwart (24V)

Doesn't work:
* SoC has crypto engine but no open driver.
* SoC has nat acceleration, but no open driver.
* This router has 2MB spi flash soldered in but MT
  nand/spi drivers do not support pin sharing,
  so it is not accessable and disabled. Stock
  firmware could read it and it was empty.

Installation

via vendor firmware:
- build an Initrd-image (> 3MiB) and upload the factory-image
- initrd can have luci-mod-failsafe
- flash final firmware via LuCI / sysupgrade on rebooted system

via TFTP:
- stop uboot into tftp-load into option "1"
- upload factory.bin image

Signed-off-by: Sven Roederer <devel-sven@geroedel.de>

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

@@ -170,6 +170,7 @@ ramips_setup_interfaces()
 	rb750gr3|\
 	rt-n14u|\
 	ubnt-erx|\
+	ubnt-erx-sfp|\
 	ur-326n4g|\
 	wrtnode|\
 	wrtnode2p | \

target/linux/ramips/base-files/etc/board.d/03_gpio_switches

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+. /lib/functions/uci-defaults.sh
+. /lib/ramips.sh
+
+board_config_update
+
+board=$(ramips_board_name)
+
+case "$board" in
+ubnt-erx)
+	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "0"
+	;;
+ubnt-erx-sfp)
+	ucidef_add_gpio_switch "poe_power_port0" "PoE Power Port0" "496"
+	ucidef_add_gpio_switch "poe_power_port1" "PoE Power Port1" "497"
+	ucidef_add_gpio_switch "poe_power_port2" "PoE Power Port2" "498"
+	ucidef_add_gpio_switch "poe_power_port3" "PoE Power Port3" "499"
+	ucidef_add_gpio_switch "poe_power_port4" "PoE Power Port4" "500"
+	;;
+esac
+
+board_config_flush
+
+exit 0

target/linux/ramips/base-files/lib/ramips.sh

@@ -487,6 +487,9 @@ ramips_board_detect() {
 	*"UBNT-ERX")
 		name="ubnt-erx"
 		;;
+	*"UBNT-ERX-SFP")
+		name="ubnt-erx-sfp"
+		;;
 	*"UR-326N4G")
 		name="ur-326n4g"
 		;;

target/linux/ramips/base-files/lib/upgrade/platform.sh

@@ -252,7 +252,8 @@ platform_check_image() {
 		# these boards use metadata images
 		return 0
 		;;
-	ubnt-erx)
+	ubnt-erx|\
+	ubnt-erx-sfp)
 		nand_do_platform_check "$board" "$1"
 		return $?;
 		;;
@@ -274,7 +275,8 @@ platform_nand_pre_upgrade() {
 	local board=$(ramips_board_name)
 
 	case "$board" in
-	ubnt-erx)
+	ubnt-erx|\
+	ubnt-erx-sfp)
 		platform_upgrade_ubnt_erx "$ARGV"
 		;;
 	esac
@@ -286,7 +288,8 @@ platform_do_upgrade() {
 	case "$board" in
 	hc5962|\
 	r6220|\
-    	ubnt-erx)
+	ubnt-erx|\
+	ubnt-erx-sfp)
 		nand_do_upgrade "$ARGV"
 		;;
 	*)

target/linux/ramips/dts/UBNT-ER-e50.dtsi

@@ -0,0 +1,106 @@
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "ubiquiti,edgerouterx";
+
+	memory@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 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x22>;
+};
+
+&nand {
+	status = "okay";
+
+	partition@0 {
+		label = "u-boot";
+		reg = <0x0 0x80000>;
+		read-only;
+	};
+
+	partition@80000 {
+		label = "u-boot-env";
+		reg = <0x80000 0x60000>;
+		read-only;
+	};
+
+	factory: partition@e0000 {
+		label = "factory";
+		reg = <0xe0000 0x60000>;
+	};
+
+	partition@140000 {
+		label = "kernel1";
+		reg = <0x140000 0x300000>;
+	};
+
+	partition@440000 {
+		label = "kernel2";
+		reg = <0x440000 0x300000>;
+	};
+
+	partition@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@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <1>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition@0 {
+			label = "spi";
+			reg = <0x0 0x200000>;
+			read-only;
+		};
+	};
+};
+
+&xhci {
+	status = "disabled";
+};

target/linux/ramips/dts/UBNT-ERX-SFP.dts

@@ -0,0 +1,24 @@
+/dts-v1/;
+
+#include "UBNT-ER-e50.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "UBNT-ERX-SFP";
+	compatible = "ubiquiti,edgerouterx-sfp";
+
+	i2c-gpio {
+		compatible = "i2c-gpio";
+		gpios = <&gpio0 3 GPIO_ACTIVE_HIGH /* sda */
+		         &gpio0 4 GPIO_ACTIVE_HIGH /* scl */
+		        >;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		pca9555@25 {
+			compatible = "pca9555";
+			reg = <0x25>;
+		};
+	};
+};

target/linux/ramips/dts/UBNT-ERX.dts

@@ -1,108 +1,7 @@
 /dts-v1/;
 
-#include "mt7621.dtsi"
+#include "UBNT-ER-e50.dtsi"
-
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
 
 / {
 	model = "UBNT-ERX";
-
-	memory@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 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_RESTART>;
-		};
-	};
-};
-
-&ethernet {
-	mtd-mac-address = <&factory 0x22>;
-};
-
-&nand {
-	status = "okay";
-
-	partition@0 {
-		label = "u-boot";
-		reg = <0x0 0x80000>;
-		read-only;
-	};
-
-	partition@80000 {
-		label = "u-boot-env";
-		reg = <0x80000 0x60000>;
-		read-only;
-	};
-
-	factory: partition@e0000 {
-		label = "factory";
-		reg = <0xe0000 0x60000>;
-	};
-
-	partition@140000 {
-		label = "kernel1";
-		reg = <0x140000 0x300000>;
-	};
-
-	partition@440000 {
-		label = "kernel2";
-		reg = <0x440000 0x300000>;
-	};
-
-	partition@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@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "jedec,spi-nor";
-		reg = <1>;
-		spi-max-frequency = <10000000>;
-		m25p,chunked-io = <32>;
-
-		partition@0 {
-			label = "spi";
-			reg = <0x0 0x200000>;
-			read-only;
-		};
-	};
-};
-
-&xhci {
-	status = "disabled";
 };

target/linux/ramips/image/mt7621.mk

@@ -184,6 +184,19 @@ define Device/ubnt-erx
 endef
 TARGET_DEVICES += ubnt-erx
 
+define Device/ubnt-erx-sfp
+  DTS := UBNT-ERX-SFP
+  FILESYSTEMS := squashfs
+  KERNEL_SIZE := 3145728
+  KERNEL := $(KERNEL_DTB) | uImage lzma
+  IMAGES := sysupgrade.tar
+  KERNEL_INITRAMFS := $$(KERNEL) | ubnt-erx-factory-image $(KDIR)/tmp/$$(KERNEL_INITRAMFS_PREFIX)-factory.tar
+  IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
+  DEVICE_TITLE := Ubiquiti EdgeRouter X-SFP
+  DEVICE_PACKAGES := -kmod-mt76 -kmod-rt2x00-lib -kmod-mac80211 -kmod-cfg80211 -wpad-mini -iwinfo kmod-i2c-algo-pca kmod-gpio-pca953x kmod-i2c-gpio-custom
+endef
+TARGET_DEVICES += ubnt-erx-sfp
+
 define Device/vr500
   DTS := VR500
   IMAGE_SIZE := 66453504