devicetree: i2c-hid: Add regulator support

Document a "vdd-supply" and an initialization delay. Can be used for
powering on/off a HID.

Signed-off-by: Caesar Wang <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: [email protected]
Signed-off-by: Brian Norris <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
This commit is contained in:
Caesar Wang 2017-02-09 18:03:56 -08:00 • committed by Jiri Kosina
commit cb5cfd91a7

View file

@ -17,6 +17,22 @@ Required properties:
- interrupt-parent: the phandle for the interrupt controller
- interrupts: interrupt line
Additional optional properties:
Some devices may support additional optional properties to help with, e.g.,
power sequencing. The following properties can be supported by one or more
device-specific compatible properties, which should be used in addition to the
"hid-over-i2c" string.
- compatible:
* "wacom,w9013" (Wacom W9013 digitizer). Supports:
- vdd-supply
- post-power-on-delay-ms
- vdd-supply: phandle of the regulator that provides the supply voltage.
- post-power-on-delay-ms: time required by the device after enabling its regulators
before it is ready for communication. Must be used with 'vdd-supply'.
Example:
i2c-hid-dev@2c {