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     1 * Silicon Labs FM Radio transmitter
    2 
    3 The Silicon Labs Si4713 is an FM radio transmitter with receive power scan
    4 supporting 76-108 MHz. It includes an RDS encoder and has both, a stereo-analog
    5 and a digital interface, which supports I2S, left-justified and a custom
    6 DSP-mode format. It is programmable through an I2C interface.
    7 
    8 Required Properties:
    9 - compatible: Should contain "silabs,si4713"
   10 - reg: the I2C address of the device
   11 
   12 Optional Properties:
   13 - interrupts-extended: Interrupt specifier for the chips interrupt
   14 - reset-gpios: GPIO specifier for the chips reset line
   15 - vdd-supply: phandle for Vdd regulator
   16 - vio-supply: phandle for Vio regulator
   17 
   18 Example:
   19 
   20 &i2c2 {
   21         fmtx: si4713@63 {
   22                 compatible = "silabs,si4713";
   23                 reg = <0x63>;
   24 
   25                 interrupts-extended = <&gpio2 21 IRQ_TYPE_EDGE_FALLING>; /* 53 */
   26                 reset-gpios = <&gpio6 3 GPIO_ACTIVE_HIGH>; /* 163 */
   27                 vio-supply = <&vio>;
   28                 vdd-supply = <&vaux1>;
   29         };
   30 };
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