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 <wxt@rock-chips.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Jiri Kosina <jikos@kernel.org> Cc: linux-input@vger.kernel.org Signed-off-by: Brian Norris <briannorris@chromium.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -17,6 +17,22 @@ Required properties:
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- interrupt-parent: the phandle for the interrupt controller
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- interrupts: interrupt line
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Additional optional properties:
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Some devices may support additional optional properties to help with, e.g.,
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power sequencing. The following properties can be supported by one or more
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device-specific compatible properties, which should be used in addition to the
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"hid-over-i2c" string.
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- compatible:
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* "wacom,w9013" (Wacom W9013 digitizer). Supports:
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- vdd-supply
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- post-power-on-delay-ms
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- vdd-supply: phandle of the regulator that provides the supply voltage.
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- post-power-on-delay-ms: time required by the device after enabling its regulators
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before it is ready for communication. Must be used with 'vdd-supply'.
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Example:
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i2c-hid-dev@2c {
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