ac100.txt

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    1 X-Powers AC100 Codec/RTC IC Device Tree bindings
    2 
    3 AC100 is a audio codec and RTC subsystem combo IC. The 2 parts are
    4 separated, including power supplies and interrupt lines, but share
    5 a common register address space and host interface.
    6 
    7 Required properties:
    8 - compatible: "x-powers,ac100"
    9 - reg: The I2C slave address or RSB hardware address for the chip
   10 - sub-nodes:
   11   - codec
   12     - compatible:               "x-powers,ac100-codec"
   13     - interrupts:               SoC NMI / GPIO interrupt connected to the
   14                                 IRQ_AUDIO pin
   15     - #clock-cells:             Shall be 0
   16     - clock-output-names:       "4M_adda"
   17 
   18     - see clock/clock-bindings.txt for common clock bindings
   19 
   20   - rtc
   21     - compatible:               "x-powers,ac100-rtc"
   22     - clocks:                   A phandle to the codec's "4M_adda" clock
   23     - #clock-cells:             Shall be 1
   24     - clock-output-names:       "cko1_rtc", "cko2_rtc", "cko3_rtc"
   25 
   26     - see clock/clock-bindings.txt for common clock bindings
   27 
   28 Example:
   29 
   30 ac100: codec@e89 {
   31         compatible = "x-powers,ac100";
   32         reg = <0xe89>;
   33 
   34         ac100_codec: codec {
   35                 compatible = "x-powers,ac100-codec";
   36                 interrupt-parent = <&r_pio>;
   37                 interrupts = <0 9 IRQ_TYPE_LEVEL_LOW>; /* PL9 */
   38                 #clock-cells = <0>;
   39                 clock-output-names = "4M_adda";
   40         };
   41 
   42         ac100_rtc: rtc {
   43                 compatible = "x-powers,ac100-rtc";
   44                 interrupt-parent = <&nmi_intc>;
   45                 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
   46                 clocks = <&ac100_codec>;
   47                 #clock-cells = <1>;
   48                 clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc";
   49         };
   50 };

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sys/contrib/device-tree/Bindings/mfd/ac100.txt