1*dddfd098SJavier Martinez Canillas* Device tree bindings for Nokia Retu and Tahvo multi-function device 2*dddfd098SJavier Martinez Canillas 3*dddfd098SJavier Martinez CanillasRetu and Tahvo are a multi-function devices found on Nokia Internet 4*dddfd098SJavier Martinez CanillasTablets (770, N800 and N810). The Retu chip provides watchdog timer 5*dddfd098SJavier Martinez Canillasand power button control functionalities while Tahvo chip provides 6*dddfd098SJavier Martinez CanillasUSB transceiver functionality. 7*dddfd098SJavier Martinez Canillas 8*dddfd098SJavier Martinez CanillasRequired properties: 9*dddfd098SJavier Martinez Canillas- compatible: "nokia,retu" or "nokia,tahvo" 10*dddfd098SJavier Martinez Canillas- reg: Specifies the CBUS slave address of the ASIC chip 11*dddfd098SJavier Martinez Canillas- interrupts: The interrupt line the device is connected to 12*dddfd098SJavier Martinez Canillas 13*dddfd098SJavier Martinez CanillasExample: 14*dddfd098SJavier Martinez Canillas 15*dddfd098SJavier Martinez Canillascbus0 { 16*dddfd098SJavier Martinez Canillas compatible = "i2c-cbus-gpio"; 17*dddfd098SJavier Martinez Canillas ... 18*dddfd098SJavier Martinez Canillas retu: retu@1 { 19*dddfd098SJavier Martinez Canillas compatible = "nokia,retu"; 20*dddfd098SJavier Martinez Canillas interrupt-parent = <&gpio4>; 21*dddfd098SJavier Martinez Canillas interrupts = <12 IRQ_TYPE_EDGE_RISING>; 22*dddfd098SJavier Martinez Canillas reg = <0x1>; 23*dddfd098SJavier Martinez Canillas }; 24*dddfd098SJavier Martinez Canillas}; 25