Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
---
Changes in v2:
- Split dt-binding to separate patch, use "reset-gpios" instead of "gpios".
Changes in v3:
- State the gpio is active low
- Add example
.../devicetree/bindings/i2c/i2c-pca-platform.txt | 29 ++++++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt b/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt
new file mode 100644
index 000000000000..f1f3876bb8e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt
@@ -0,0 +1,29 @@
+* 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
+ - interrupt-parent : the phandle for the interrupt controller.
+ If an interrupt is not specified polling will be used.
+ - 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>;
+ };
--
2.13.0
--
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