+++ /dev/null
-Driver a GPIO line that can be used to turn the power off.
-
-The driver supports both level triggered and edge triggered power off.
-At driver load time, the driver will request the given gpio line and
-install a pm_power_off handler. If the optional properties 'input' is
-not found, the GPIO line will be driven in the inactive
-state. Otherwise its configured as an input.
-
-When the pm_power_off is called, the gpio is configured as an output,
-and drive active, so triggering a level triggered power off
-condition. This will also cause an inactive->active edge condition, so
-triggering positive edge triggered power off. After a delay of 100ms,
-the GPIO is set to inactive, thus causing an active->inactive edge,
-triggering negative edge triggered power off. After another 100ms
-delay the GPIO is driver active again. If the power is still on and
-the CPU still running after a 3000ms delay, a WARN_ON(1) is emitted.
-
-Required properties:
-- compatible : should be "gpio-poweroff".
-- gpios : The GPIO to set high/low, see "gpios property" in
- Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
- low to power down the board set it to "Active Low", otherwise set
- gpio to "Active High".
-
-Optional properties:
-- input : Initially configure the GPIO line as an input. Only reconfigure
- it to an output when the pm_power_off function is called. If this optional
- property is not specified, the GPIO is initialized as an output in its
- inactive state.
-
-Examples:
-
-gpio-poweroff {
- compatible = "gpio-poweroff";
- gpios = <&gpio 4 0>;
-};
+++ /dev/null
-Drive a GPIO line that can be used to restart the system from a restart
-handler.
-
-This binding supports level and edge triggered reset. At driver load
-time, the driver will request the given gpio line and install a restart
-handler. If the optional properties 'open-source' is not found, the GPIO line
-will be driven in the inactive state. Otherwise its not driven until
-the restart is initiated.
-
-When the system is restarted, the restart handler will be invoked in
-priority order. The gpio is configured as an output, and driven active,
-triggering a level triggered reset condition. This will also cause an
-inactive->active edge condition, triggering positive edge triggered
-reset. After a delay specified by active-delay, the GPIO is set to
-inactive, thus causing an active->inactive edge, triggering negative edge
-triggered reset. After a delay specified by inactive-delay, the GPIO
-is driven active again. After a delay specified by wait-delay, the
-restart handler completes allowing other restart handlers to be attempted.
-
-Required properties:
-- compatible : should be "gpio-restart".
-- gpios : The GPIO to set high/low, see "gpios property" in
- Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
- low to reset the board set it to "Active Low", otherwise set
- gpio to "Active High".
-
-Optional properties:
-- open-source : Treat the GPIO as being open source and defer driving
- it to when the restart is initiated. If this optional property is not
- specified, the GPIO is initialized as an output in its inactive state.
-- priority : A priority ranging from 0 to 255 (default 128) according to
- the following guidelines:
- 0: Restart handler of last resort, with limited restart
- capabilities
- 128: Default restart handler; use if no other restart handler is
- expected to be available, and/or if restart functionality is
- sufficient to restart the entire system
- 255: Highest priority restart handler, will preempt all other
- restart handlers
-- active-delay: Delay (default 100) to wait after driving gpio active [ms]
-- inactive-delay: Delay (default 100) to wait after driving gpio inactive [ms]
-- wait-delay: Delay (default 3000) to wait after completing restart
- sequence [ms]
-
-Examples:
-
-gpio-restart {
- compatible = "gpio-restart";
- gpios = <&gpio 4 0>;
- priority = <128>;
- active-delay = <100>;
- inactive-delay = <100>;
- wait-delay = <3000>;
-};
--- /dev/null
+Driver a GPIO line that can be used to turn the power off.
+
+The driver supports both level triggered and edge triggered power off.
+At driver load time, the driver will request the given gpio line and
+install a pm_power_off handler. If the optional properties 'input' is
+not found, the GPIO line will be driven in the inactive
+state. Otherwise its configured as an input.
+
+When the pm_power_off is called, the gpio is configured as an output,
+and drive active, so triggering a level triggered power off
+condition. This will also cause an inactive->active edge condition, so
+triggering positive edge triggered power off. After a delay of 100ms,
+the GPIO is set to inactive, thus causing an active->inactive edge,
+triggering negative edge triggered power off. After another 100ms
+delay the GPIO is driver active again. If the power is still on and
+the CPU still running after a 3000ms delay, a WARN_ON(1) is emitted.
+
+Required properties:
+- compatible : should be "gpio-poweroff".
+- gpios : The GPIO to set high/low, see "gpios property" in
+ Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
+ low to power down the board set it to "Active Low", otherwise set
+ gpio to "Active High".
+
+Optional properties:
+- input : Initially configure the GPIO line as an input. Only reconfigure
+ it to an output when the pm_power_off function is called. If this optional
+ property is not specified, the GPIO is initialized as an output in its
+ inactive state.
+
+Examples:
+
+gpio-poweroff {
+ compatible = "gpio-poweroff";
+ gpios = <&gpio 4 0>;
+};
--- /dev/null
+Drive a GPIO line that can be used to restart the system from a restart
+handler.
+
+This binding supports level and edge triggered reset. At driver load
+time, the driver will request the given gpio line and install a restart
+handler. If the optional properties 'open-source' is not found, the GPIO line
+will be driven in the inactive state. Otherwise its not driven until
+the restart is initiated.
+
+When the system is restarted, the restart handler will be invoked in
+priority order. The gpio is configured as an output, and driven active,
+triggering a level triggered reset condition. This will also cause an
+inactive->active edge condition, triggering positive edge triggered
+reset. After a delay specified by active-delay, the GPIO is set to
+inactive, thus causing an active->inactive edge, triggering negative edge
+triggered reset. After a delay specified by inactive-delay, the GPIO
+is driven active again. After a delay specified by wait-delay, the
+restart handler completes allowing other restart handlers to be attempted.
+
+Required properties:
+- compatible : should be "gpio-restart".
+- gpios : The GPIO to set high/low, see "gpios property" in
+ Documentation/devicetree/bindings/gpio/gpio.txt. If the pin should be
+ low to reset the board set it to "Active Low", otherwise set
+ gpio to "Active High".
+
+Optional properties:
+- open-source : Treat the GPIO as being open source and defer driving
+ it to when the restart is initiated. If this optional property is not
+ specified, the GPIO is initialized as an output in its inactive state.
+- priority : A priority ranging from 0 to 255 (default 128) according to
+ the following guidelines:
+ 0: Restart handler of last resort, with limited restart
+ capabilities
+ 128: Default restart handler; use if no other restart handler is
+ expected to be available, and/or if restart functionality is
+ sufficient to restart the entire system
+ 255: Highest priority restart handler, will preempt all other
+ restart handlers
+- active-delay: Delay (default 100) to wait after driving gpio active [ms]
+- inactive-delay: Delay (default 100) to wait after driving gpio inactive [ms]
+- wait-delay: Delay (default 3000) to wait after completing restart
+ sequence [ms]
+
+Examples:
+
+gpio-restart {
+ compatible = "gpio-restart";
+ gpios = <&gpio 4 0>;
+ priority = <128>;
+ active-delay = <100>;
+ inactive-delay = <100>;
+ wait-delay = <3000>;
+};