linux/Documentation/devicetree/bindings/extcon/extcon-rt8973a.txt
Rob Herring 791d3ef2e1 dt-bindings: remove 'interrupt-parent' from bindings
'interrupt-parent' is often documented as part of define bindings, but
it is really outside the scope of a device binding. It's never required
in a given node as it is often inherited from a parent node. Or it can
be implicit if a parent node is an 'interrupt-controller' node. So
remove it from all the binding files.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
2018-07-25 14:09:39 -06:00

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* Richtek RT8973A - Micro USB Switch device
The Richtek RT8973A is Micro USB Switch with OVP and I2C interface. The RT8973A
is a USB port accessory detector and switch that is optimized to protect low
voltage system from abnormal high input voltage (up to 28V) and supports high
speed USB operation. Also, RT8973A support 'auto-configuration' mode.
If auto-configuration mode is enabled, RT8973A would control internal h/w patch
for USB D-/D+ switching.
Required properties:
- compatible: Should be "richtek,rt8973a-muic"
- reg: Specifies the I2C slave address of the MUIC block. It should be 0x14
- interrupts: Interrupt specifiers for detection interrupt sources.
Example:
rt8973a@14 {
compatible = "richtek,rt8973a-muic";
interrupt-parent = <&gpx1>;
interrupts = <5 0>;
reg = <0x14>;
};