FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/clk-s5pv210-audss.txt

     * Samsung Audio Subsystem Clock Controller
     
     The Samsung Audio Subsystem clock controller generates and supplies clocks
     to Audio Subsystem block available in the S5PV210 and compatible SoCs.
     
     Required Properties:
     
     - compatible: should be "samsung,s5pv210-audss-clock".
     - reg: physical base address and length of the controller's register set.
    
    - #clock-cells: should be 1.
    
    - clocks:
      - hclk: AHB bus clock of the Audio Subsystem.
      - xxti: Optional fixed rate PLL reference clock, parent of mout_audss. If
        not specified (i.e. xusbxti is used for PLL reference), it is fixed to
        a clock named "xxti".
      - fout_epll: Input PLL to the AudioSS block, parent of mout_audss.
      - iiscdclk0: Optional external i2s clock, parent of mout_i2s. If not
        specified, it is fixed to a clock named "iiscdclk0".
      - sclk_audio0: Audio bus clock, parent of mout_i2s.
    
    - clock-names: Aliases for the above clocks. They should be "hclk",
      "xxti", "fout_epll", "iiscdclk0", and "sclk_audio0" respectively.
    
    All available clocks are defined as preprocessor macros in
    dt-bindings/clock/s5pv210-audss-clk.h header and can be used in device
    tree sources.
    
    Example: Clock controller node.
    
            clk_audss: clock-controller@c0900000 {
                    compatible = "samsung,s5pv210-audss-clock";
                    reg = <0xc0900000 0x1000>;
                    #clock-cells = <1>;
                    clock-names = "hclk", "xxti",
                                    "fout_epll", "sclk_audio0";
                    clocks = <&clocks DOUT_HCLKP>, <&xxti>,
                                    <&clocks FOUT_EPLL>, <&clocks SCLK_AUDIO0>;
            };
    
    Example: I2S controller node that consumes the clock generated by the clock
             controller. Refer to the standard clock bindings for information
             about 'clocks' and 'clock-names' property.
    
            i2s0: i2s@3830000 {
                    /* ... */
                    clock-names = "iis", "i2s_opclk0",
                                    "i2s_opclk1";
                    clocks = <&clk_audss CLK_I2S>, <&clk_audss CLK_I2S>,
                                    <&clk_audss CLK_DOUT_AUD_BUS>;
                    /* ... */
            };

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