linux_dsm_epyc7002/Documentation/devicetree/bindings/mfd/retu.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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* Device tree bindings for Nokia Retu and Tahvo multi-function device
Retu and Tahvo are a multi-function devices found on Nokia Internet
Tablets (770, N800 and N810). The Retu chip provides watchdog timer
and power button control functionalities while Tahvo chip provides
USB transceiver functionality.
Required properties:
- compatible: "nokia,retu" or "nokia,tahvo"
- reg: Specifies the CBUS slave address of the ASIC chip
- interrupts: The interrupt line the device is connected to
Example:
cbus0 {
compatible = "i2c-cbus-gpio";
...
retu: retu@1 {
compatible = "nokia,retu";
interrupt-parent = <&gpio4>;
interrupts = <12 IRQ_TYPE_EDGE_RISING>;
reg = <0x1>;
};
};