162306a36Sopenharmony_ci* Device tree bindings for Nokia Retu and Tahvo multi-function device 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciRetu and Tahvo are a multi-function devices found on Nokia Internet 462306a36Sopenharmony_ciTablets (770, N800 and N810). The Retu chip provides watchdog timer 562306a36Sopenharmony_ciand power button control functionalities while Tahvo chip provides 662306a36Sopenharmony_ciUSB transceiver functionality. 762306a36Sopenharmony_ci 862306a36Sopenharmony_ciRequired properties: 962306a36Sopenharmony_ci- compatible: "nokia,retu" or "nokia,tahvo" 1062306a36Sopenharmony_ci- reg: Specifies the CBUS slave address of the ASIC chip 1162306a36Sopenharmony_ci- interrupts: The interrupt line the device is connected to 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ciExample: 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cicbus0 { 1662306a36Sopenharmony_ci compatible = "i2c-cbus-gpio"; 1762306a36Sopenharmony_ci ... 1862306a36Sopenharmony_ci retu: retu@1 { 1962306a36Sopenharmony_ci compatible = "nokia,retu"; 2062306a36Sopenharmony_ci interrupt-parent = <&gpio4>; 2162306a36Sopenharmony_ci interrupts = <12 IRQ_TYPE_EDGE_RISING>; 2262306a36Sopenharmony_ci reg = <0x1>; 2362306a36Sopenharmony_ci }; 2462306a36Sopenharmony_ci}; 25