Lines Matching +full:a +full:- +full:gpio

1 Driver a GPIO line that can be used to turn the power off.
4 At driver load time, the driver will request the given gpio line and
5 install a handler to power off the system. If the optional properties
6 'input' is not found, the GPIO line will be driven in the inactive
9 When the power-off handler is called, the gpio is configured as an
10 output, and drive active, so triggering a level triggered power off
11 condition. This will also cause an inactive->active edge condition, so
12 triggering positive edge triggered power off. After a delay of 100ms,
13 the GPIO is set to inactive, thus causing an active->inactive edge,
15 delay the GPIO is driver active again. If the power is still on and
16 the CPU still running after a 3000ms delay, a WARN_ON(1) is emitted.
19 - compatible : should be "gpio-poweroff".
20 - gpios : The GPIO to set high/low, see "gpios property" in
21   Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
23   gpio to "Active High".
26 - input : Initially configure the GPIO line as an input. Only reconfigure
27   it to an output when the power-off handler is called. If this optional
28   property is not specified, the GPIO is initialized as an output in its
30 - active-delay-ms: Delay (default 100) to wait after driving gpio active
31 - inactive-delay-ms: Delay (default 100) to wait after driving gpio inactive
32 - timeout-ms: Time to wait before asserting a WARN_ON(1). If nothing is
37 gpio-poweroff {
38 	compatible = "gpio-poweroff";
39 	gpios = <&gpio 4 0>;
40 	timeout-ms = <3000>;