1*e00ad7efSChris Packham* NXP PCA PCA9564/PCA9665 I2C controller 2*e00ad7efSChris Packham 3*e00ad7efSChris PackhamThe PCA9564/PCA9665 serves as an interface between most standard 4*e00ad7efSChris Packhamparallel-bus microcontrollers/microprocessors and the serial I2C-bus 5*e00ad7efSChris Packhamand allows the parallel bus system to communicate bi-directionally 6*e00ad7efSChris Packhamwith the I2C-bus. 7*e00ad7efSChris Packham 8*e00ad7efSChris PackhamRequired properties : 9*e00ad7efSChris Packham 10*e00ad7efSChris Packham - reg : Offset and length of the register set for the device 11*e00ad7efSChris Packham - compatible : one of "nxp,pca9564" or "nxp,pca9665" 12*e00ad7efSChris Packham 13*e00ad7efSChris PackhamOptional properties 14*e00ad7efSChris Packham - interrupts : the interrupt number 15*e00ad7efSChris Packham - reset-gpios : gpio specifier for gpio connected to RESET_N pin. As the line 16*e00ad7efSChris Packham is active low, it should be marked GPIO_ACTIVE_LOW. 17*e00ad7efSChris Packham - clock-frequency : I2C bus frequency. 18*e00ad7efSChris Packham 19*e00ad7efSChris PackhamExample: 20*e00ad7efSChris Packham i2c0: i2c@80000 { 21*e00ad7efSChris Packham compatible = "nxp,pca9564"; 22*e00ad7efSChris Packham #address-cells = <1>; 23*e00ad7efSChris Packham #size-cells = <0>; 24*e00ad7efSChris Packham reg = <0x80000 0x4>; 25*e00ad7efSChris Packham reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>; 26*e00ad7efSChris Packham clock-frequency = <100000>; 27*e00ad7efSChris Packham }; 28