ath79: Add support for OpenMesh OM2P v1

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

* Qualcomm/Atheros AR7240 rev 2
* 350/350/175 MHz (CPU/DDR/AHB)
* 32 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
* 1T1R 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
    + 18-24V passive POE (mode B)
    + used as WAN interface
  - eth1
    + builtin switch port 4
    + used as LAN interface
* 12-24V 1A DC
* external antenna

The device itself requires the mtdparts from the uboot arguments to
properly boot the flashed image and to support dual-boot (primary +
recovery image). Unfortunately, the name of the mtd device in mtdparts is
still using the legacy name "ar7240-nor0" which must be supplied using the
Linux-specfic DT parameter linux,mtd-name to overwrite the generic name
"spi0.0".

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, 9 insertions, 0 deletions

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 652b54092e..03750856ab 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/generic/base-files/etc/board.d/01_leds
@@ -271,6 +271,10 @@ openmesh,om2p-hs-v4)
 	ucidef_set_led_netdev "wan" "WAN" "blue:wan" "eth0"
 	ucidef_set_led_switch "lan" "LAN" "blue:lan" "switch0" "0x02"
 	;;
+openmesh,om2p-v1)
+	ucidef_set_led_netdev "wan" "WAN" "blue:wan" "eth0"
+	ucidef_set_led_switch "lan" "LAN" "blue:lan" "switch0" "0x10"
+	;;
 openmesh,om5p-ac-v1)
 	ucidef_set_led_netdev "lan" "LAN" "blue:lan" "eth0"
 	ucidef_set_led_netdev "wan" "WAN" "blue:wan" "eth1"
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 88269c03ec..54c4152757 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/generic/base-files/etc/board.d/02_network
@@ -188,6 +188,7 @@ ath79_setup_interfaces()
 	compex,wpj531-16m|\
 	openmesh,a40|\
 	openmesh,a60|\
+	openmesh,om2p-v1|\
 	openmesh,om2p-v4|\
 	openmesh,om2p-hs-v4|\
 	plasmacloud,pa300|\
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 10421c2e28..31b872e618 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
@@ -131,6 +131,9 @@ case "$FIRMWARE" in
 	openmesh,om5p-an)
 		caldata_extract "ART" 0x5000 0x440
 		;;
+	openmesh,om2p-v1)
+		caldata_extract "ART" 0x1000 0x440
+		;;
 	wd,mynet-n600|\
 	wd,mynet-n750)
 		caldata_extract "art" 0x5000 0x440
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 13b6ec9d99..67e53c5fde 100644
--- a/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ath79/generic/base-files/lib/upgrade/platform.sh
@@ -73,6 +73,7 @@ platform_do_upgrade() {
 	openmesh,mr900-v2|\
 	openmesh,mr1750-v1|\
 	openmesh,mr1750-v2|\
+	openmesh,om2p-v1|\
 	openmesh,om2p-v2|\
 	openmesh,om2p-v4|\
 	openmesh,om2p-hs-v1|\