The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/sound/xlnx,i2s.txt

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    1 Device-Tree bindings for Xilinx I2S PL block
    2 
    3 The IP supports I2S based playback/capture audio
    4 
    5 Required property:
    6  - compatible: "xlnx,i2s-transmitter-1.0" for playback and
    7                "xlnx,i2s-receiver-1.0" for capture
    8 
    9 Required property common to both I2S playback and capture:
   10  - reg: Base address and size of the IP core instance.
   11  - xlnx,dwidth: sample data width. Can be any of 16, 24.
   12  - xlnx,num-channels: Number of I2S streams. Can be any of 1, 2, 3, 4.
   13                       supported channels = 2 * xlnx,num-channels
   14 
   15 Example:
   16 
   17         i2s_receiver@a0080000 {
   18                 compatible = "xlnx,i2s-receiver-1.0";
   19                 reg = <0x0 0xa0080000 0x0 0x10000>;
   20                 xlnx,dwidth = <0x18>;
   21                 xlnx,num-channels = <1>;
   22         };
   23         i2s_transmitter@a0090000 {
   24                 compatible = "xlnx,i2s-transmitter-1.0";
   25                 reg = <0x0 0xa0090000 0x0 0x10000>;
   26                 xlnx,dwidth = <0x18>;
   27                 xlnx,num-channels = <1>;
   28         };

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