openwrt/target/linux/ramips/dts/rt3050_teltonika_rut5xx.dts
Sven Eckelmann 7c3efd5273 ramips: Switch Teltonika RUT5xx to kernel GPIO-line watchdog driver
The commit 04e91631e0 ("om-watchdog: add support for Teltonika RUT5xx
(ramips)") used the deprecated om-watchdog daemon to handle the GPIO-line
connected watchdog on the Teltonika RUT5xx.

But this daemon has massive problems since commit 30f61a34b4
("base-files: always use staged sysupgrade"). The process will always be
stopped on sysupgrades. If the sysupgrade takes slightly longer, the
watchdog is not triggered at the correct time and thus the sysupgrade will
interrupted hard by the watchdog sysupgrade. And this hard interrupt can
easily brick the device when there is no fallback (dual-boot, ...).

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2022-02-03 22:27:15 +01:00

120 lines
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#include "rt3050.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
compatible = "teltonika,rut5xx", "ralink,rt3050-soc";
model = "Teltonika RUT5XX";
aliases {
led-boot = &led_status;
led-failsafe = &led_status;
led-running = &led_status;
led-upgrade = &led_status;
};
leds {
compatible = "gpio-leds";
led_status: status {
label = "green:status";
gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
};
};
keys {
compatible = "gpio-keys-polled";
poll-interval = <20>;
reset {
label = "reset";
gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
};
watchdog {
compatible = "linux,wdt-gpio";
gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
hw_algo = "toggle";
/* hw_margin_ms is actually 280s but driver limits it to 60s */
hw_margin_ms = <60000>;
always-running;
};
};
&spi0 {
status = "okay";
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <10000000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "u-boot";
reg = <0x0 0x30000>;
read-only;
};
partition@30000 {
label = "u-boot-env";
reg = <0x30000 0x10000>;
read-only;
};
factory: partition@40000 {
label = "factory";
reg = <0x40000 0x10000>;
read-only;
};
partition@50000 {
compatible = "denx,uimage";
label = "firmware";
reg = <0x50000 0xfb0000>;
};
};
};
};
&state_default {
gpio {
groups = "i2c", "jtag", "rgmii", "mdio", "uartf";
function = "gpio";
};
};
&ethernet {
nvmem-cells = <&macaddr_factory_28>;
nvmem-cell-names = "mac-address";
};
&esw {
mediatek,portmap = <0x3e>;
};
&wmac {
ralink,mtd-eeprom = <&factory 0x0>;
};
&otg {
status = "okay";
};
&factory {
compatible = "nvmem-cells";
#address-cells = <1>;
#size-cells = <1>;
macaddr_factory_28: macaddr@28 {
reg = <0x28 0x6>;
};
};