8143709c90
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>
171 lines
2.8 KiB
Plaintext
171 lines
2.8 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
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#include "ar7240.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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/ {
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compatible = "openmesh,om2p-v1", "qca,ar7240";
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model = "OpenMesh OM2P v1";
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chosen {
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/delete-property/ bootargs;
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};
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aliases {
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led-boot = &led_power_blue;
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led-failsafe = &led_power_blue;
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led-running = &led_power_blue;
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led-upgrade = &led_power_blue;
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label-mac-device = ð0;
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};
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keys {
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compatible = "gpio-keys";
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reset {
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label = "reset";
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linux,code = <KEY_RESTART>;
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gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
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};
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};
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leds {
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compatible = "gpio-leds";
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pinctrl-names = "default";
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pinctrl-0 = <&switch_led_disable_pins>;
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led_power_blue: power_blue {
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label = "blue:power";
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gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
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default-state = "on";
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};
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wifi_green {
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label = "green:wifi";
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gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
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linux,default-trigger = "phy0tpt";
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};
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wifi_red {
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label = "red:wifi";
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gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
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};
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wifi_yellow {
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label = "yellow:wifi";
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gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
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};
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lan_blue {
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label = "blue:lan";
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gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
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};
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wan_blue {
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label = "blue:wan";
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gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
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};
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};
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watchdog {
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compatible = "linux,wdt-gpio";
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gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
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hw_algo = "toggle";
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/* hw_margin_ms is actually 300s but driver limits it to 60s */
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hw_margin_ms = <60000>;
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always-running;
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};
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};
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&spi {
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status = "okay";
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flash@0 {
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compatible = "jedec,spi-nor";
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reg = <0>;
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spi-max-frequency = <40000000>;
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linux,mtd-name = "ar7240-nor0";
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/* partitions are passed via bootloader */
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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label = "u-boot";
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reg = <0x000000 0x040000>;
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read-only;
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};
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partition@40000 {
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label = "u-boot-env";
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reg = <0x040000 0x040000>;
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};
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partition@80000 {
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label = "custom";
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reg = <0x080000 0x140000>;
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read-only;
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};
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partition@1c0000 {
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label = "inactive";
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reg = <0x1c0000 0x700000>;
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};
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partition@8c0000 {
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label = "inactive2";
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reg = <0x8c0000 0x700000>;
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};
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art: partition@fc0000 {
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label = "ART";
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reg = <0xfc0000 0x040000>;
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read-only;
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};
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};
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};
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};
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ð0 {
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nvmem-cells = <&macaddr_art_0>;
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nvmem-cell-names = "mac-address";
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};
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ð1 {
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status = "okay";
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nvmem-cells = <&macaddr_art_6>;
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nvmem-cell-names = "mac-address";
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};
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&pcie {
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status = "okay";
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wifi@0,0 {
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compatible = "pci168c,002a";
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reg = <0x0000 0 0 0 0>;
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qca,no-eeprom;
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#gpio-cells = <2>;
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gpio-controller;
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};
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};
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&art {
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compatible = "nvmem-cells";
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#address-cells = <1>;
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#size-cells = <1>;
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macaddr_art_0: macaddr@0 {
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reg = <0x0 0x6>;
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};
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macaddr_art_6: macaddr@6 {
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reg = <0x6 0x6>;
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};
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};
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