Kernel-4.18.0-80.el8_ltc2952-poweroff

Binding for the LTC2952 PowerPath controller

This chip is used to externally trigger a system shut down. Once the trigger has
been sent, the chip’s watchdog has to be reset to gracefully shut down.
A full powerdown can be triggered via the kill signal.

Required properties:

• compatible: Must contain: “lltc,ltc2952”
• watchdog-gpios: phandle + gpio-specifier for the GPIO connected to the

        chip's watchdog line
  

• kill-gpios: phandle + gpio-specifier for the GPIO connected to the

        chip's kill line
  

Optional properties:

• trigger-gpios: phandle + gpio-specifier for the GPIO connected to the

        chip's trigger line. If this property is not set, the
        trigger function is ignored and the chip is kept alive
        until an explicit kill signal is received
  

Example:

ltc2952 {
compatible = “lltc,ltc2952”;

trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
kill-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;

};