ar71xx: Add support for Teltonika RUT900

Teltonika RUT900 is a Router with LTE dual SIM, WiFi, 4x Ethernet
ports, I/O, RS232, RS485, GPS.

The device ist based on a Atheros AR9344 rev 3,

Specifications:
- 560/450/225 MHz (CPU/DDR/AHB)
- 128 MB of RAM
- 16 MB of FLASH
- Serial Console header on a Card Board edge connector
- 4x 10/100 Mbps Ethernet (3x LAN, 1x WAN)
- 2.4 GHz Wifi
- 2x external, detachable Wifi antennas
- LTE Modem Huawei ME909u-521 (Also other Modem seen)
- 2x LTE antennas
- 1x GPS antenna
- 7x LED, 1x button
- 1x USB Connector
- 1x Serial RS232
- 1x Serial RS485
- 1x MicroSD Card

The GPL sources of the device are available at www.teltonika.lt/gpl/
and are based on OpenWRT Barrier Breaker (14.07)

Running from tftp:

The Router starts into the uboot Webupdater if the Button ist pressed
more than 3 seconds, if no Network cable is attached it starts the
uboot serial console, from there the router loads the firmware image
via tftpboot from 192.168.1.2:firmware.bin (the router has the
192.168.1.1). With bootm the loaded image will be booted.

Signed-off-by: Steffen Weinreich <steve@weinreich.org>

11 files changed, 525 insertions, 1 deletions

diff --git a/target/linux/ar71xx/base-files/etc/diag.sh b/target/linux/ar71xx/base-files/etc/diag.sh
index 9cad8995db..0d0ebdcd6f 100644
--- a/target/linux/ar71xx/base-files/etc/diag.sh
+++ b/target/linux/ar71xx/base-files/etc/diag.sh
@@ -423,6 +423,9 @@ get_status_led() {
 	tl-wdr6500-v2)
 		status_led="tp-link:white:system"
 		;;
+	tlt-rut900)
+		status_led="tlt:green:status"
+		;;
 	tube2h)
 		status_led="alfa:green:signal4"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/ar71xx.sh b/target/linux/ar71xx/base-files/lib/ar71xx.sh
index a751c64a3a..8ee17f43c8 100755
--- a/target/linux/ar71xx/base-files/lib/ar71xx.sh
+++ b/target/linux/ar71xx/base-files/lib/ar71xx.sh
@@ -1154,6 +1154,9 @@ ar71xx_board_detect() {
 	*"TL-WR941ND")
 		name="tl-wr941nd"
 		;;
+	*"TLT-RUT900")
+		name="tlt-rut900"
+		;;
 	*"Tube2H")
 		name="tube2h"
 		;;
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
index e246f35add..1bc993450d 100755
--- a/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ar71xx/base-files/lib/upgrade/platform.sh
@@ -443,7 +443,8 @@ platform_check_image() {
 	tl-wr941nd-v5|\
 	tl-wr941nd-v6|\
 	tl-wr940n-v4|\
-	tl-wr941nd)
+	tl-wr941nd|\
+	tlt-rut900)
 		local magic_ver="0100"
 
 		case "$board" in
diff --git a/target/linux/ar71xx/config-4.4 b/target/linux/ar71xx/config-4.4
index 0a375862ba..b508248041 100644
--- a/target/linux/ar71xx/config-4.4
+++ b/target/linux/ar71xx/config-4.4
@@ -207,6 +207,7 @@ CONFIG_ATH79_MACH_TL_WR841N_V9=y
 CONFIG_ATH79_MACH_TL_WR941ND=y
 CONFIG_ATH79_MACH_TL_WR941ND_V6=y
 CONFIG_ATH79_MACH_TL_WR940N_V4=y
+CONFIG_ATH79_MACH_TLT_RUT900=y
 CONFIG_ATH79_MACH_TUBE2H=y
 CONFIG_ATH79_MACH_UBNT=y
 CONFIG_ATH79_MACH_UBNT_UNIFIAC=y
@@ -389,6 +390,7 @@ CONFIG_MTD_SPLIT_UIMAGE_FW=y
 CONFIG_MTD_SPLIT_WRGG_FW=y
 CONFIG_MTD_SPLIT_MINOR_FW=y
 CONFIG_MTD_TPLINK_PARTS=y
+CONFIG_MTD_TLT_PARTS=y
 CONFIG_MYLOADER=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NEED_PER_CPU_KM=y
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
index 9030954c27..35dc916fca 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -2021,3 +2021,14 @@ config ATH79_MACH_TL_WPA8630
 	select ATH79_DEV_LEDS_GPIO
 	select ATH79_DEV_M25P80
 	select ATH79_DEV_WMAC
+
+config ATH79_MACH_TLT_RUT900
+	bool "Teltonika RUT900 board support"
+	select SOC_AR934X
+	select ATH79_DEV_AP9X_PCI if PCI
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_USB
+	select ATH79_DEV_WMAC
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 2868adcaef..e92aa6f4d8 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -212,6 +212,7 @@ obj-$(CONFIG_ATH79_MACH_TL_WR841N_V9)		+= mach-tl-wr841n-v9.o
 obj-$(CONFIG_ATH79_MACH_TL_WR941ND)		+= mach-tl-wr941nd.o
 obj-$(CONFIG_ATH79_MACH_TL_WR941ND_V6)		+= mach-tl-wr941nd-v6.o
 obj-$(CONFIG_ATH79_MACH_TL_WR940N_V4)		+= mach-tl-wr940n-v4.o
+obj-$(CONFIG_ATH79_MACH_TLT_RUT900)		+= mach-tlt-rut900.o
 obj-$(CONFIG_ATH79_MACH_TUBE2H)			+= mach-tube2h.o
 obj-$(CONFIG_ATH79_MACH_UBNT)			+= mach-ubnt.o
 obj-$(CONFIG_ATH79_MACH_UBNT_UNIFIAC)		+= mach-ubnt-unifiac.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-tlt-rut900.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-tlt-rut900.c
new file mode 100644
index 0000000000..0f53692a69
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-tlt-rut900.c
@@ -0,0 +1,260 @@
+/*
+ *  TELTONIKA TLT-RUT900 board support
+ *
+ *  Copyright (C) 2014 Teltonika
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ */
+
+#include <linux/phy.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/ath9k_platform.h>
+#include <linux/ar8216_platform.h>
+#include <linux/mmc/host.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/mmc_spi.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-spi.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/i2c-gpio.h>
+
+/* I2C interface */
+#define rut900_GPIO_SDA			17
+#define rut900_GPIO_SCK			16
+
+#define RUT900_GPIO_LED_BAR0		48
+#define RUT900_GPIO_LED_BAR1		49
+#define RUT900_GPIO_LED_BAR2		50
+#define RUT900_GPIO_LED_BAR3		51
+#define RUT900_GPIO_LED_BAR4		52
+#define RUT900_GPIO_LED_ST_GRE		54
+#define RUT900_GPIO_LED_ST_RED		53
+//#define RUT900_GPIO_LED_WAN		18
+#define RUT900_GPIO_LED_LAN1		14
+#define RUT900_GPIO_LED_LAN2		13
+#define RUT900_GPIO_LED_LAN3		22
+#define RUT900_GPIO_LED_WAN		1
+
+#define RUT900_GPIO_EXTERNAL_LNA0	2
+//#define RUT900_GPIO_EXTERNAL_LNA1	3
+
+#define RUT900_GPIO_BTN_RESET		15
+#define RUT900_GPIO_BTN_EXPANDER	4
+#define RUT900_GPIO_BTN_TEST		58
+#define RUT900_GPIO_MMC_CS		3
+
+//#define RUT900_GPIO_EXPANDER_POWER	11
+
+#define RUT900_KEYS_POLL_INTERVAL	20	/* msecs */
+#define RUT900_KEYS_DEBOUNCE_INTERVAL	(3 * RUT900_KEYS_POLL_INTERVAL)
+#define RUT900_KEYS_DEBOUNCE_INTERVAL_DIN 20
+
+#define RUT900_MAC0_OFFSET		0
+#define RUT900_MAC1_OFFSET		6
+#define RUT900_WMAC_CALDATA_OFFSET	0x1000
+#define RUT900_PCIE_CALDATA_OFFSET	0x5000
+
+static struct i2c_gpio_platform_data rut900_i2c_device_platdata = {
+	.sda_pin	= rut900_GPIO_SDA,
+	.scl_pin	= rut900_GPIO_SCK,
+	.udelay		= 10,
+};
+
+static struct platform_device rut900_i2c_device = {
+	.name		= "i2c-gpio",
+	.id		= 0,
+	.num_resources	= 0,
+	.resource	= NULL,
+	.dev		= {
+		.platform_data	= &rut900_i2c_device_platdata,
+	},
+};
+
+static struct i2c_board_info rut900_i2c_devs[] __initdata = {
+	{
+		I2C_BOARD_INFO("pca9539", 0x74), 
+	},
+	{
+		I2C_BOARD_INFO("mcp3221", 0x4D), 
+	},
+};
+
+static void rut900_i2c_init(void)
+{
+	/* The gpio interface */
+	platform_device_register(&rut900_i2c_device);
+	/* I2C devices */
+	i2c_register_board_info(0, rut900_i2c_devs, ARRAY_SIZE(rut900_i2c_devs));
+}
+
+//Flash partitions are calcutated in drivers/mtd/tltpart.c
+static const char *rut900_part_probes[] = {
+	"tlt",
+	NULL,
+};
+
+static struct flash_platform_data rut900_flash_data = {
+	.part_probes	= rut900_part_probes,
+};
+
+static struct gpio_led rut900_leds_gpio[] __initdata = {
+	{
+		.name		= "tlt:green:signal_bar0",
+		.gpio		= RUT900_GPIO_LED_BAR0,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:green:signal_bar1",
+		.gpio		= RUT900_GPIO_LED_BAR1,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:green:signal_bar2",
+		.gpio		= RUT900_GPIO_LED_BAR2,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:green:signal_bar3",
+		.gpio		= RUT900_GPIO_LED_BAR3,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:green:signal_bar4",
+		.gpio		= RUT900_GPIO_LED_BAR4,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:green:status",
+		.gpio		= RUT900_GPIO_LED_ST_GRE,
+		.active_low	= 0,
+	},
+	{
+		.name		= "tlt:red:status",
+		.gpio		= RUT900_GPIO_LED_ST_RED,
+		.active_low	= 0,
+	},
+
+};
+
+static struct gpio_keys_button rut900_gpio_keys[] __initdata = {
+	{
+		.desc		= "Reset button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = RUT900_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= RUT900_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+	{
+		.desc		= "Expander interrupt",
+		.type		= EV_KEY,
+		.code		= KEY_RFKILL,
+		.debounce_interval = RUT900_KEYS_DEBOUNCE_INTERVAL_DIN,
+		.gpio		= RUT900_GPIO_BTN_EXPANDER,
+	},
+};
+
+static struct spi_board_info ath79_spi_info[] = {
+	{
+		.bus_num	= 0,
+		.chip_select	= 0,
+		.max_speed_hz	= 25000000,
+		.modalias	= "m25p80",
+		.platform_data	= &rut900_flash_data,
+	},
+	{
+		.bus_num	= 0,
+		.chip_select	= 1,
+		.max_speed_hz	= 25000000,
+		.modalias	= "mmc_spi",
+	}
+};
+
+static struct ath79_spi_platform_data ath79_spi_data = {
+	.bus_num 	= 0,
+	.num_chipselect	= 2,
+};
+
+static void __init rut900_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f020000);
+	u8 *art = (u8 *) KSEG1ADDR(0x1f030000);
+	u8 tmpmac[ETH_ALEN];
+
+	ath79_register_spi(&ath79_spi_data, ath79_spi_info, 2);
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(rut900_leds_gpio),
+				 rut900_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, RUT900_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(rut900_gpio_keys),
+					rut900_gpio_keys);
+					
+	ath79_wmac_set_ext_lna_gpio(0, RUT900_GPIO_EXTERNAL_LNA0);
+
+	ath79_init_mac(tmpmac, mac, 2);
+	ath79_register_wmac(art + RUT900_WMAC_CALDATA_OFFSET, tmpmac);
+
+
+	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_SW_ONLY_MODE);
+
+	ath79_register_mdio(1, 0x0);
+
+	/* LAN */
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
+
+	/* GMAC1 is connected to the internal switch */
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+
+	ath79_register_eth(1);
+
+	/* WAN */
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 1);
+
+	/* GMAC0 is connected to the PHY4 of the internal switch */
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_switch_data.phy_poll_mask = BIT(4);
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio1_device.dev;
+
+	ath79_register_eth(0);
+
+	ath79_register_usb();
+
+	ath79_gpio_output_select(RUT900_GPIO_LED_LAN1,
+				 AR934X_GPIO_OUT_LED_LINK3);
+	ath79_gpio_output_select(RUT900_GPIO_LED_LAN2,
+				 AR934X_GPIO_OUT_LED_LINK2);
+	ath79_gpio_output_select(RUT900_GPIO_LED_LAN3,
+				 AR934X_GPIO_OUT_LED_LINK1);
+	ath79_gpio_output_select(RUT900_GPIO_LED_WAN,
+				 AR934X_GPIO_OUT_LED_LINK4);
+	
+	//SPI CS1
+	ath79_gpio_output_select(RUT900_GPIO_MMC_CS,
+				 7);
+	
+	//HS UART
+	ath79_gpio_output_select(18, 79);
+	
+	/* Init I2C interface */
+	rut900_i2c_init();
+}
+
+MIPS_MACHINE(ATH79_MACH_TLT_RUT900, "TLT-RUT900",
+		"TELTONIKA TLT-RUT900",
+		rut900_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 18033acd12..8aaa0a5c24 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -259,6 +259,7 @@ enum ath79_mach_type {
 	ATH79_MACH_TL_WR941ND_V5,		/* TP-LINK TL-WR941ND v5 */
 	ATH79_MACH_TL_WR941ND_V6,		/* TP-LINK TL-WR941ND v6 */
 	ATH79_MACH_TL_WR940N_V4,		/* TP-LINK TL-WR940N v4 */
+	ATH79_MACH_TLT_RUT900,			/* Teltonika RUT900 */
 	ATH79_MACH_TUBE2H,			/* Alfa Network Tube2H */
 	ATH79_MACH_UBNT_AIRGW,			/* Ubiquiti AirGateway */
 	ATH79_MACH_UBNT_AIRGWP,			/* Ubiquiti AirGateway Pro */
diff --git a/target/linux/ar71xx/files/drivers/mtd/tltpart.c b/target/linux/ar71xx/files/drivers/mtd/tltpart.c
new file mode 100644
index 0000000000..92f558d778
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/mtd/tltpart.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/magic.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#define TLT_NUM_PARTS	7
+#define TLT_HEADER_V1	0x01000000
+#define MD5SUM_LEN		16
+
+#define TLT_UBOOT_LEN	0x20000
+#define TLT_CONFIG_LEN	0x10000
+#define TLT_ART_LEN		0x10000
+#define EVENTLOG_LEN		0x90000
+
+struct tlt_fw_header {
+	uint32_t	version;	/* header version */
+	char		vendor_name[24];
+	char		fw_version[36];
+	uint32_t	hw_id;		/* hardware id */
+	uint32_t	hw_rev;		/* hardware revision */
+	uint32_t	unk1;
+	uint8_t		md5sum1[MD5SUM_LEN];
+	uint32_t	unk2;
+	uint8_t		md5sum2[MD5SUM_LEN];
+	uint32_t	unk3;
+	uint32_t	kernel_la;	/* kernel load address */
+	uint32_t	kernel_ep;	/* kernel entry point */
+	uint32_t	fw_length;	/* total length of the firmware */
+	uint32_t	kernel_ofs;	/* kernel data offset */
+	uint32_t	kernel_len;	/* kernel data length */
+	uint32_t	rootfs_ofs;	/* rootfs data offset */
+	uint32_t	rootfs_len;	/* rootfs data length */
+	uint32_t	boot_ofs;	/* bootloader data offset */
+	uint32_t	boot_len;	/* bootloader data length */
+	uint8_t		pad[360];
+} __attribute__ ((packed));
+
+static struct tlt_fw_header *
+tlt_read_header(struct mtd_info *mtd, size_t offset)
+{
+	struct tlt_fw_header *header;
+	size_t header_len;
+	size_t retlen;
+	int ret;
+	u32 t;
+
+	header = vmalloc(sizeof(*header));
+	if (!header)
+		goto err;
+
+	header_len = sizeof(struct tlt_fw_header);
+	ret = mtd_read(mtd, offset, header_len, &retlen,
+		       (unsigned char *) header);
+	if (ret)
+		goto err_free_header;
+
+	if (retlen != header_len)
+		goto err_free_header;
+
+	/* sanity checks */
+	t = be32_to_cpu(header->version);
+	if (t != TLT_HEADER_V1)
+		goto err_free_header;
+
+	t = be32_to_cpu(header->kernel_ofs);
+	if (t != header_len)
+		goto err_free_header;
+
+	return header;
+
+err_free_header:
+	vfree(header);
+err:
+	return NULL;
+}
+
+static int tlt_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
+{
+	u32 magic;
+	size_t retlen;
+	int ret;
+
+	ret = mtd_read(mtd, offset, sizeof(magic), &retlen,
+		       (unsigned char *) &magic);
+	if (ret)
+		return ret;
+
+	if (retlen != sizeof(magic))
+		return -EIO;
+
+	if (le32_to_cpu(magic) != SQUASHFS_MAGIC &&
+	    magic != 0x19852003)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int tlt_parse_partitions(struct mtd_info *master,
+				   struct mtd_partition **pparts,
+				   struct mtd_part_parser_data *data)
+{
+	struct mtd_partition *parts;
+	struct tlt_fw_header *header;
+	int nr_parts;
+	size_t kernel_offset;
+	size_t rootfs_offset;
+	size_t squashfs_offset;
+	int ret;
+
+	nr_parts = TLT_NUM_PARTS;
+	parts = kzalloc(nr_parts * sizeof(struct mtd_partition), GFP_KERNEL);
+	if (!parts) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	kernel_offset = TLT_UBOOT_LEN + TLT_CONFIG_LEN + TLT_ART_LEN;
+
+	header = tlt_read_header(master, kernel_offset);
+	if (!header) {
+		pr_notice("%s: no TP-Link header found\n", master->name);
+		ret = -ENODEV;
+		goto err_free_parts;
+	}
+
+	squashfs_offset = kernel_offset + sizeof(struct tlt_fw_header) +
+			  be32_to_cpu(header->kernel_len);
+
+	ret = tlt_check_rootfs_magic(master, squashfs_offset);
+	if (ret == 0)
+		rootfs_offset = squashfs_offset;
+	else
+		rootfs_offset = kernel_offset + be32_to_cpu(header->rootfs_ofs);
+
+	vfree(header);
+
+	parts[0].name = "u-boot";
+	parts[0].offset = 0;
+	parts[0].size = TLT_UBOOT_LEN;
+	parts[0].mask_flags = MTD_WRITEABLE;
+	
+	parts[1].name = "config";
+	parts[1].offset = TLT_UBOOT_LEN;
+	parts[1].size = TLT_CONFIG_LEN;
+	
+	parts[2].name = "art";
+	parts[2].offset = TLT_UBOOT_LEN + TLT_CONFIG_LEN;
+	parts[2].size = TLT_ART_LEN;
+	parts[2].mask_flags = MTD_WRITEABLE;
+
+	parts[3].name = "kernel";
+	parts[3].offset = kernel_offset;
+	parts[3].size = rootfs_offset - kernel_offset;
+
+	parts[4].name = "rootfs";
+	parts[4].offset = rootfs_offset;
+	parts[4].size = master->size - rootfs_offset - EVENTLOG_LEN;
+
+	parts[5].name = "firmware";
+	parts[5].offset = kernel_offset;
+	parts[5].size = master->size - kernel_offset - EVENTLOG_LEN;
+
+	parts[6].name = "event-log";
+	parts[6].offset = master->size - EVENTLOG_LEN;
+	parts[6].size = EVENTLOG_LEN;
+
+	*pparts = parts;
+	return nr_parts;
+
+err_free_parts:
+	kfree(parts);
+err:
+	*pparts = NULL;
+	return ret;
+}
+
+static struct mtd_part_parser tlt_parser = {
+	.owner		= THIS_MODULE,
+	.parse_fn	= tlt_parse_partitions,
+	.name		= "tlt",
+};
+
+static int __init tlt_parser_init(void)
+{
+	register_mtd_parser(&tlt_parser);
+
+	return 0;
+}
+
+module_init(tlt_parser_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
diff --git a/target/linux/ar71xx/image/tp-link.mk b/target/linux/ar71xx/image/tp-link.mk
index 6ddf05239d..49e87cfb99 100644
--- a/target/linux/ar71xx/image/tp-link.mk
+++ b/target/linux/ar71xx/image/tp-link.mk
@@ -1084,3 +1084,14 @@ define Device/tl-wa7210n-v2
   CONSOLE := ttyATH0,115200
 endef
 TARGET_DEVICES += tl-wa7210n-v2
+
+define Device/tlt-rut900
+  $(Device/tplink-16mlzma)
+  DEVICE_TITLE := Teltonika RUT900
+  DEVICE_PACKAGES := kmod-usb-core kmod-usb2 kmod-ledtrig-usbdev
+  BOARDNAME := TLT-RUT900
+  DEVICE_PROFILE := TLTRUT900
+  TPLINK_HWID := 0x35000001
+  CONSOLE := ttyS0,115200
+endef
+TARGET_DEVICES += tlt-rut900
diff --git a/target/linux/ar71xx/patches-4.4/471-ath79-tlt-rut900-flash-layout.patch b/target/linux/ar71xx/patches-4.4/471-ath79-tlt-rut900-flash-layout.patch
new file mode 100644
index 0000000000..da4e088471
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/471-ath79-tlt-rut900-flash-layout.patch
@@ -0,0 +1,25 @@
+--- a/drivers/mtd/Kconfig
++++ b/drivers/mtd/Kconfig
+@@ -202,6 +202,12 @@ config MTD_TPLINK_PARTS
+ 	---help---
+ 	  TBD.
+ 
++config MTD_TLT_PARTS
++	tristate "Teltonika RUT900 partitioning support"
++	depends on ATH79
++	---help---
++	  Teltonika RUT900 partitioning support
++
+ comment "User Modules And Translation Layers"
+ 
+ #
+--- a/drivers/mtd/Makefile
++++ b/drivers/mtd/Makefile
+@@ -18,6 +18,7 @@ obj-$(CONFIG_MTD_BCM47XX_PARTS)	+= bcm47
+ obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o
+ obj-$(CONFIG_MTD_TPLINK_PARTS)	+= tplinkpart.o
+ obj-$(CONFIG_MTD_CYBERTAN_PARTS) += cybertan_part.o
++obj-$(CONFIG_MTD_TLT_PARTS)	+= tltpart.o
+ 
+ # 'Users' - code which presents functionality to userspace.
+ obj-$(CONFIG_MTD_BLKDEVS)	+= mtd_blkdevs.o