18c2ecf20Sopenharmony_ci* Device tree bindings for Nokia Retu and Tahvo multi-function device
28c2ecf20Sopenharmony_ci
38c2ecf20Sopenharmony_ciRetu and Tahvo are a multi-function devices found on Nokia Internet
48c2ecf20Sopenharmony_ciTablets (770, N800 and N810). The Retu chip provides watchdog timer
58c2ecf20Sopenharmony_ciand power button control functionalities while Tahvo chip provides
68c2ecf20Sopenharmony_ciUSB transceiver functionality.
78c2ecf20Sopenharmony_ci
88c2ecf20Sopenharmony_ciRequired properties:
98c2ecf20Sopenharmony_ci- compatible:		"nokia,retu" or "nokia,tahvo"
108c2ecf20Sopenharmony_ci- reg:			Specifies the CBUS slave address of the ASIC chip
118c2ecf20Sopenharmony_ci- interrupts: 		The interrupt line the device is connected to
128c2ecf20Sopenharmony_ci
138c2ecf20Sopenharmony_ciExample:
148c2ecf20Sopenharmony_ci
158c2ecf20Sopenharmony_cicbus0 {
168c2ecf20Sopenharmony_ci	compatible = "i2c-cbus-gpio";
178c2ecf20Sopenharmony_ci	...
188c2ecf20Sopenharmony_ci	retu: retu@1 {
198c2ecf20Sopenharmony_ci		compatible = "nokia,retu";
208c2ecf20Sopenharmony_ci		interrupt-parent = <&gpio4>;
218c2ecf20Sopenharmony_ci		interrupts = <12 IRQ_TYPE_EDGE_RISING>;
228c2ecf20Sopenharmony_ci		reg = <0x1>;
238c2ecf20Sopenharmony_ci	};
248c2ecf20Sopenharmony_ci};
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