1 * Device tree bindings for Nokia Retu and Tahv 1 * Device tree bindings for Nokia Retu and Tahvo multi-function device
2 2
3 Retu and Tahvo are a multi-function devices fo 3 Retu and Tahvo are a multi-function devices found on Nokia Internet
4 Tablets (770, N800 and N810). The Retu chip pr 4 Tablets (770, N800 and N810). The Retu chip provides watchdog timer
5 and power button control functionalities while 5 and power button control functionalities while Tahvo chip provides
6 USB transceiver functionality. 6 USB transceiver functionality.
7 7
8 Required properties: 8 Required properties:
9 - compatible: "nokia,retu" or "nokia 9 - compatible: "nokia,retu" or "nokia,tahvo"
10 - reg: Specifies the CBUS sla 10 - reg: Specifies the CBUS slave address of the ASIC chip
11 - interrupts: The interrupt line the 11 - interrupts: The interrupt line the device is connected to
>> 12 - interrupt-parent: The parent interrupt controller
12 13
13 Example: 14 Example:
14 15
15 cbus0 { 16 cbus0 {
16 compatible = "i2c-cbus-gpio"; 17 compatible = "i2c-cbus-gpio";
17 ... 18 ...
18 retu: retu@1 { 19 retu: retu@1 {
19 compatible = "nokia,retu"; 20 compatible = "nokia,retu";
20 interrupt-parent = <&gpio4>; 21 interrupt-parent = <&gpio4>;
21 interrupts = <12 IRQ_TYPE_EDGE 22 interrupts = <12 IRQ_TYPE_EDGE_RISING>;
22 reg = <0x1>; 23 reg = <0x1>;
23 }; 24 };
24 }; 25 };
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