ath79: add support for OpenMesh OM2P-HS v3

Device specifications:
======================

* Qualcomm/Atheros AR9341 rev 1
* 535/400/200 MHz (CPU/DDR/AHB)
* 64 MB of RAM
* 16 MB of SPI NOR flash
  - 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 2x 10/100 Mbps Ethernet
* 2T2R 2.4 GHz Wi-Fi
* 6x GPIO-LEDs (3x wifi, 2x ethernet, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default)
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 2x fast ethernet
  - eth0
    + 802.3af POE
    + builtin switch port 1
    + used as LAN interface
  - eth1
    + 18-24V passive POE (mode B)
    + used as WAN interface
* 12-24V 1A DC
* internal antennas

Flashing instructions:
======================

Various methods can be used to install the actual image on the flash.
Two easy ones are:

ap51-flash
----------

The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.

initramfs from TFTP
-------------------

The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):

   setenv serverip 192.168.1.21
   setenv ipaddr 192.168.1.1
   tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr

The actual sysupgrade image can then be transferred (on the LAN port) to
the device via

  scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/

On the device, the sysupgrade must then be started using

  sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin

Signed-off-by: Sven Eckelmann <sven@narfation.org>

4 files changed, 19 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9341_openmesh_om2p-hs-v3.dts b/target/linux/ath79/dts/ar9341_openmesh_om2p-hs-v3.dts
new file mode 100644
index 0000000000..e3b15b17f6
--- /dev/null
+++ b/target/linux/ath79/dts/ar9341_openmesh_om2p-hs-v3.dts
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9341_openmesh_om2p-hs.dtsi"
+
+/ {
+	compatible = "openmesh,om2p-hs-v3", "qca,ar9341";
+	model = "OpenMesh OM2P-HS v3";
+};
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 8926ffc0c8..3889969ee5 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
@@ -147,6 +147,7 @@ comfast,cf-e560ac)
 comfast,cf-ew72|\
 openmesh,om2p-hs-v1|\
 openmesh,om2p-hs-v2|\
+openmesh,om2p-hs-v3|\
 telco,t1)
 	ucidef_set_led_switch "lan" "LAN" "blue:lan" "switch0" "0x02"
 	ucidef_set_led_netdev "wan" "WAN" "blue:wan" "eth1"
diff --git a/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh b/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
index 73c328173a..9ff36f1bf5 100644
--- a/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
@@ -53,6 +53,7 @@ platform_do_upgrade() {
 	openmesh,om2p-v4|\
 	openmesh,om2p-hs-v1|\
 	openmesh,om2p-hs-v2|\
+	openmesh,om2p-hs-v3|\
 	openmesh,om2p-hs-v4)
 		PART_NAME="inactive"
 		platform_do_upgrade_openmesh "$1"
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 4e80ac8402..631cc2fd6a 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -1595,6 +1595,15 @@ define Device/openmesh_om2p-hs-v2
 endef
 TARGET_DEVICES += openmesh_om2p-hs-v2
 
+define Device/openmesh_om2p-hs-v3
+  $(Device/openmesh_om2p-common)
+  SOC := ar9341
+  DEVICE_MODEL := OM2P-HS
+  DEVICE_VARIANT := v3
+  SUPPORTED_DEVICES += om2p-hsv3
+endef
+TARGET_DEVICES += openmesh_om2p-hs-v3
+
 define Device/openmesh_om2p-hs-v4
   $(Device/openmesh_om2p-common)
   SOC := qca9533