1*c66ec88fSEmmanuel Vadot* NXP PCA PCA9564/PCA9665 I2C controller 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotThe PCA9564/PCA9665 serves as an interface between most standard 4*c66ec88fSEmmanuel Vadotparallel-bus microcontrollers/microprocessors and the serial I2C-bus 5*c66ec88fSEmmanuel Vadotand allows the parallel bus system to communicate bi-directionally 6*c66ec88fSEmmanuel Vadotwith the I2C-bus. 7*c66ec88fSEmmanuel Vadot 8*c66ec88fSEmmanuel VadotRequired properties : 9*c66ec88fSEmmanuel Vadot 10*c66ec88fSEmmanuel Vadot - reg : Offset and length of the register set for the device 11*c66ec88fSEmmanuel Vadot - compatible : one of "nxp,pca9564" or "nxp,pca9665" 12*c66ec88fSEmmanuel Vadot 13*c66ec88fSEmmanuel VadotOptional properties 14*c66ec88fSEmmanuel Vadot - interrupts : the interrupt number 15*c66ec88fSEmmanuel Vadot - reset-gpios : gpio specifier for gpio connected to RESET_N pin. As the line 16*c66ec88fSEmmanuel Vadot is active low, it should be marked GPIO_ACTIVE_LOW. 17*c66ec88fSEmmanuel Vadot - clock-frequency : I2C bus frequency. 18*c66ec88fSEmmanuel Vadot 19*c66ec88fSEmmanuel VadotExample: 20*c66ec88fSEmmanuel Vadot i2c0: i2c@80000 { 21*c66ec88fSEmmanuel Vadot compatible = "nxp,pca9564"; 22*c66ec88fSEmmanuel Vadot #address-cells = <1>; 23*c66ec88fSEmmanuel Vadot #size-cells = <0>; 24*c66ec88fSEmmanuel Vadot reg = <0x80000 0x4>; 25*c66ec88fSEmmanuel Vadot reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>; 26*c66ec88fSEmmanuel Vadot clock-frequency = <100000>; 27*c66ec88fSEmmanuel Vadot }; 28