1*c66ec88fSEmmanuel Vadot* Device tree bindings for Nokia Retu and Tahvo multi-function device 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotRetu and Tahvo are a multi-function devices found on Nokia Internet 4*c66ec88fSEmmanuel VadotTablets (770, N800 and N810). The Retu chip provides watchdog timer 5*c66ec88fSEmmanuel Vadotand power button control functionalities while Tahvo chip provides 6*c66ec88fSEmmanuel VadotUSB transceiver functionality. 7*c66ec88fSEmmanuel Vadot 8*c66ec88fSEmmanuel VadotRequired properties: 9*c66ec88fSEmmanuel Vadot- compatible: "nokia,retu" or "nokia,tahvo" 10*c66ec88fSEmmanuel Vadot- reg: Specifies the CBUS slave address of the ASIC chip 11*c66ec88fSEmmanuel Vadot- interrupts: The interrupt line the device is connected to 12*c66ec88fSEmmanuel Vadot 13*c66ec88fSEmmanuel VadotExample: 14*c66ec88fSEmmanuel Vadot 15*c66ec88fSEmmanuel Vadotcbus0 { 16*c66ec88fSEmmanuel Vadot compatible = "i2c-cbus-gpio"; 17*c66ec88fSEmmanuel Vadot ... 18*c66ec88fSEmmanuel Vadot retu: retu@1 { 19*c66ec88fSEmmanuel Vadot compatible = "nokia,retu"; 20*c66ec88fSEmmanuel Vadot interrupt-parent = <&gpio4>; 21*c66ec88fSEmmanuel Vadot interrupts = <12 IRQ_TYPE_EDGE_RISING>; 22*c66ec88fSEmmanuel Vadot reg = <0x1>; 23*c66ec88fSEmmanuel Vadot }; 24*c66ec88fSEmmanuel Vadot}; 25