openwrt/target/linux/ath79/dts/ar7240_openmesh_om2p-v1.dts

171 lines
2.8 KiB
Plaintext
Raw Normal View History

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>
2020-11-23 12:41:34 +00:00
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
#include "ar7240.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
compatible = "openmesh,om2p-v1", "qca,ar7240";
model = "OpenMesh OM2P v1";
chosen {
/delete-property/ bootargs;
};
aliases {
led-boot = &led_power_blue;
led-failsafe = &led_power_blue;
led-running = &led_power_blue;
led-upgrade = &led_power_blue;
label-mac-device = &eth0;
};
keys {
compatible = "gpio-keys";
reset {
label = "reset";
linux,code = <KEY_RESTART>;
gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&switch_led_disable_pins>;
led_power_blue: power_blue {
label = "blue:power";
gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
default-state = "on";
};
wifi_green {
label = "green:wifi";
gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
linux,default-trigger = "phy0tpt";
};
wifi_red {
label = "red:wifi";
gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
};
wifi_yellow {
label = "yellow:wifi";
gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
};
lan_blue {
label = "blue:lan";
gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
};
wan_blue {
label = "blue:wan";
gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
};
};
watchdog {
compatible = "linux,wdt-gpio";
gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
hw_algo = "toggle";
/* hw_margin_ms is actually 300s but driver limits it to 60s */
hw_margin_ms = <60000>;
always-running;
};
};
&spi {
status = "okay";
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <40000000>;
linux,mtd-name = "ar7240-nor0";
/* partitions are passed via bootloader */
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "u-boot";
reg = <0x000000 0x040000>;
read-only;
};
partition@40000 {
label = "u-boot-env";
reg = <0x040000 0x040000>;
};
partition@80000 {
label = "custom";
reg = <0x080000 0x140000>;
read-only;
};
partition@1c0000 {
label = "inactive";
reg = <0x1c0000 0x700000>;
};
partition@8c0000 {
label = "inactive2";
reg = <0x8c0000 0x700000>;
};
art: partition@fc0000 {
label = "ART";
reg = <0xfc0000 0x040000>;
read-only;
};
};
};
};
&eth0 {
nvmem-cells = <&macaddr_art_0>;
nvmem-cell-names = "mac-address";
};
&eth1 {
status = "okay";
nvmem-cells = <&macaddr_art_6>;
nvmem-cell-names = "mac-address";
};
&pcie {
status = "okay";
wifi@0,0 {
compatible = "pci168c,002a";
reg = <0x0000 0 0 0 0>;
qca,no-eeprom;
#gpio-cells = <2>;
gpio-controller;
};
};
&art {
compatible = "nvmem-cells";
#address-cells = <1>;
#size-cells = <1>;
macaddr_art_0: macaddr@0 {
reg = <0x0 0x6>;
};
macaddr_art_6: macaddr@6 {
reg = <0x6 0x6>;
};
};