Documentation/devicetree/bindings/sound/sunxi,sun4i-spdif.txt

   1 Allwinner Sony/Philips Digital Interface Format (S/PDIF) Controller
   2
   3 The Allwinner S/PDIF audio block is a transceiver that allows the
   4 processor to receive and transmit digital audio via an coaxial cable or
   5 a fibre cable.
   6 For now only playback is supported.
   7
   8 Required properties:
   9
  10   - compatible          : should be one of the following:
  11     - "allwinner,sun4i-a10-spdif": for the Allwinner A10 SoC
  12
  13   - reg                 : Offset and length of the register set for the device.
  14
  15   - interrupts          : Contains the spdif interrupt.
  16
  17   - dmas                : Generic dma devicetree binding as described in
  18                           Documentation/devicetree/bindings/dma/dma.txt.
  19
  20   - dma-names           : Two dmas have to be defined, "tx" and "rx".
  21
  22   - clocks              : Contains an entry for each entry in clock-names.
  23
  24   - clock-names         : Includes the following entries:
  25         "apb"             clock for the spdif bus.
  26         "spdif"           clock for spdif controller.
  27
  28 Example:
  29
  30 spdif: spdif@01c21000 {
  31         compatible = "allwinner,sun4i-a10-spdif";
  32         reg = <0x01c21000 0x40>;
  33         interrupts = <13>;
  34         clocks = <&apb0_gates 1>, <&spdif_clk>;
  35         clock-names = "apb", "spdif";
  36         dmas = <&dma 0 2>, <&dma 0 2>;
  37         dma-names = "rx", "tx";
  38         status = "okay";
  39 };