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-* NXP PCA954x I2C bus switch
-
-The driver supports NXP PCA954x and PCA984x I2C mux/switch devices.
-
-Required Properties:
-
- - compatible: Must contain one of the following.
- "nxp,pca9540",
- "nxp,pca9542",
- "nxp,pca9543",
- "nxp,pca9544",
- "nxp,pca9545",
- "nxp,pca9546", "nxp,pca9846",
- "nxp,pca9547", "nxp,pca9847",
- "nxp,pca9548", "nxp,pca9848",
- "nxp,pca9849"
-
- - reg: The I2C address of the device.
-
- The following required properties are defined externally:
-
- - Standard I2C mux properties. See i2c-mux.txt in this directory.
- - I2C child bus nodes. See i2c-mux.txt in this directory.
-
-Optional Properties:
-
- - reset-gpios: Reference to the GPIO connected to the reset input.
- - idle-state: if present, overrides i2c-mux-idle-disconnect,
- Please refer to Documentation/devicetree/bindings/mux/mux-controller.yaml
- - i2c-mux-idle-disconnect: Boolean; if defined, forces mux to disconnect all
- children in idle state. This is necessary for example, if there are several
- multiplexers on the bus and the devices behind them use same I2C addresses.
- - interrupts: Interrupt mapping for IRQ.
- - interrupt-controller: Marks the device node as an interrupt controller.
- - #interrupt-cells : Should be two.
- - first cell is the pin number
- - second cell is used to specify flags.
- See also Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
-
-Example:
-
- i2c-switch@74 {
- compatible = "nxp,pca9548";
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0x74>;
-
- interrupt-parent = <&ipic>;
- interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
- interrupt-controller;
- #interrupt-cells = <2>;
-
- i2c@2 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <2>;
-
- eeprom@54 {
- compatible = "atmel,24c08";
- reg = <0x54>;
- };
- };
-
- i2c@4 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <4>;
-
- rtc@51 {
- compatible = "nxp,pcf8563";
- reg = <0x51>;
- };
- };
- };