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Commit a7f5cf38 authored by Guenter Roeck's avatar Guenter Roeck Committed by Rob Herring
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dt-bindings: power: reset: gpio-poweroff: Drop reference to pm_power_off 



pm_power_off is an implementation detail. Replace it with a more generic
description of the driver's functionality.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Acked-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent c3b5dda0

Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt

+5 −5
Original line number Diff line number Diff line
@@ -2,12 +2,12 @@ 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

install a handler to power off the system. 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

When the power-off handler 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,
@@ -24,7 +24,7 @@ Required properties: 


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

  it to an output when the power-off handler is called. If this optional

  property is not specified, the GPIO is initialized as an output in its

  inactive state.