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/rtc/rtc-meson.txt

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    1 * Amlogic Meson6, Meson8, Meson8b and Meson8m2 RTC
    2 
    3 Required properties:
    4 - compatible: should be one of the following describing the hardware:
    5         * "amlogic,meson6-rtc"
    6         * "amlogic,meson8-rtc"
    7         * "amlogic,meson8b-rtc"
    8         * "amlogic,meson8m2-rtc"
    9 
   10 - reg: physical register space for the controller's memory mapped registers.
   11 - interrupts: the interrupt line of the RTC block.
   12 - clocks: reference to the external 32.768kHz crystal oscillator.
   13 - vdd-supply: reference to the power supply of the RTC block.
   14 - resets: reset controller reference to allow reset of the controller
   15 
   16 Optional properties for the battery-backed non-volatile memory:
   17 - #address-cells: should be 1 to address the battery-backed non-volatile memory
   18 - #size-cells: should be 1 to reference the battery-backed non-volatile memory
   19 
   20 Optional child nodes:
   21 - see ../nvmem/nvmem.txt
   22 
   23 Example:
   24 
   25         rtc: rtc@740 {
   26                 compatible = "amlogic,meson6-rtc";
   27                 reg = <0x740 0x14>;
   28                 interrupts = <GIC_SPI 72 IRQ_TYPE_EDGE_RISING>;
   29                 clocks = <&rtc32k_xtal>;
   30                 vdd-supply = <&rtc_vdd>;
   31                 resets = <&reset RESET_RTC>;
   32 
   33                 #address-cells = <1>;
   34                 #size-cells = <1>;
   35         };

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