ath79: add support for Ubiquiti Nanostation Loco M (XM)

This adds support for the Ubiquiti Nanostation Loco M (XM), which
has the same board/LEDs as the Bullet M XM, but different case and
antennas.

Specifications:
- AR7241 SoC @ 400 MHz
- 32 MB RAM
- 8 MB SPI flash
- 1x 10/100 Mbps Ethernet, 24 Vdc PoE-in
- NS Loco M2: built-in antenna: 8 dBi; AR9287
- NS Loco M5: built-in antenna: 13 dBi; 2T2R 5 GHz radio
- POWER/LAN green LEDs
- 4x RSSI LEDs (red, orange, green, green)
- UART (115200 8N1) on PCB

Flashing via WebUI:
  Upload the factory image via the stock firmware web UI.
  Note that only certain firmware versions accept unsigned
  images. Refer to the device's Wiki page for further information.

Flashing via TFTP:
  Same procedure as other NanoStation M boards.

- Use a pointy tool (e.g., pen cap, paper clip) and keep the reset
  button on the device or on the PoE supply pressed
- Power on the device via PoE (keep reset button pressed)
- Keep pressing until LEDs flash alternatively LED1+LED3 =>
  LED2+LED4 => LED1+LED3, etc.
- Release reset button
- The device starts a TFTP server at 192.168.1.20
- Set a static IP on the computer (e.g., 192.168.1.21/24)
- Upload via tftp the factory image:
  $ tftp 192.168.1.20
  tftp> bin
  tftp> trace
  tftp> put openwrt-ath79-generic-xxxxx-ubnt_nanostation-loco-m-squashfs-factory.bin

Tested on NanoStation Loco M2.

Signed-off-by: Sven Roederer <freifunk@it-solutions.geroedel.de>
Co-developed-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

5 files changed, 25 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar7241_ubnt_nanostation-loco-m.dts b/target/linux/ath79/dts/ar7241_ubnt_nanostation-loco-m.dts
new file mode 100644
index 0000000000..386b7c7073
--- /dev/null
+++ b/target/linux/ath79/dts/ar7241_ubnt_nanostation-loco-m.dts
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "ar7241_ubnt_xm_outdoor.dtsi"
+
+/ {
+	compatible = "ubnt,nanostation-loco-m", "ubnt,xm", "qca,ar7241";
+	model = "Ubiquiti Nanostation Loco M";
+};
+
+&eth1 {
+	compatible = "syscon", "simple-mfd";
+};
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/01_leds b/target/linux/ath79/generic/base-files/etc/board.d/01_leds
index 946d7306c3..3567df662b 100755
--- a/target/linux/ath79/generic/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/generic/base-files/etc/board.d/01_leds
@@ -244,6 +244,7 @@ trendnet,tew-823dru)
 	;;
 ubnt,bullet-m|\
 ubnt,bullet-m-xw|\
+ubnt,nanostation-loco-m|\
 ubnt,nanostation-loco-m-xw|\
 ubnt,nanostation-m|\
 ubnt,nanostation-m-xw|\
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/02_network b/target/linux/ath79/generic/base-files/etc/board.d/02_network
index 69c19358e2..993632562f 100755
--- a/target/linux/ath79/generic/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/generic/base-files/etc/board.d/02_network
@@ -47,6 +47,7 @@ ath79_setup_interfaces()
 	ubnt,litebeam-ac-gen2|\
 	ubnt,nanobeam-ac|\
 	ubnt,nanostation-ac-loco|\
+	ubnt,nanostation-loco-m|\
 	ubnt,nanostation-loco-m-xw|\
 	ubnt,rocket-m|\
 	ubnt,unifiac-lite|\
@@ -426,6 +427,7 @@ ath79_setup_macs()
 		;;
 	ubnt,airrouter|\
 	ubnt,bullet-m|\
+	ubnt,nanostation-loco-m|\
 	ubnt,nanostation-m|\
 	ubnt,rocket-m|\
 	ubnt,unifi)
diff --git a/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom b/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index 312acc8684..ea42478c61 100644
--- a/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -90,6 +90,7 @@ case "$FIRMWARE" in
 	tplink,tl-wr842n-v1|\
 	ubnt,airrouter|\
 	ubnt,bullet-m|\
+	ubnt,nanostation-loco-m|\
 	ubnt,nanostation-m|\
 	ubnt,rocket-m)
 		caldata_extract "art" 0x1000 0x1000
diff --git a/target/linux/ath79/image/generic-ubnt.mk b/target/linux/ath79/image/generic-ubnt.mk
index ffae83eda5..c0b6121238 100644
--- a/target/linux/ath79/image/generic-ubnt.mk
+++ b/target/linux/ath79/image/generic-ubnt.mk
@@ -179,6 +179,14 @@ define Device/ubnt_nanostation-ac-loco
 endef
 TARGET_DEVICES += ubnt_nanostation-ac-loco
 
+define Device/ubnt_nanostation-loco-m
+  $(Device/ubnt-xm)
+  DEVICE_MODEL := Nanostation Loco M
+  DEVICE_PACKAGES += rssileds
+  SUPPORTED_DEVICES += bullet-m
+endef
+TARGET_DEVICES += ubnt_nanostation-loco-m
+
 define Device/ubnt_nanostation-loco-m-xw
   $(Device/ubnt-xw)
   DEVICE_MODEL := Nanostation Loco M