linux-stable/Documentation/devicetree/bindings/i2c/i2c-pca-platform.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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* NXP PCA PCA9564/PCA9665 I2C controller
The PCA9564/PCA9665 serves as an interface between most standard
parallel-bus microcontrollers/microprocessors and the serial I2C-bus
and allows the parallel bus system to communicate bi-directionally
with the I2C-bus.
Required properties :
- reg : Offset and length of the register set for the device
- compatible : one of "nxp,pca9564" or "nxp,pca9665"
Optional properties
- interrupts : the interrupt number
- reset-gpios : gpio specifier for gpio connected to RESET_N pin. As the line
is active low, it should be marked GPIO_ACTIVE_LOW.
- clock-frequency : I2C bus frequency.
Example:
i2c0: i2c@80000 {
compatible = "nxp,pca9564";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x80000 0x4>;
reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
clock-frequency = <100000>;
};