FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/timer/img,pistachio-gptimer.txt

     * Pistachio general-purpose timer based clocksource
     
     Required properties:
      - compatible: "img,pistachio-gptimer".
      - reg: Address range of the timer registers.
      - interrupts: An interrupt for each of the four timers
      - clocks: Should contain a clock specifier for each entry in clock-names
      - clock-names: Should contain the following entries:
                     "sys", interface clock
                    "slow", slow counter clock
                    "fast", fast counter clock
     - img,cr-periph: Must contain a phandle to the peripheral control
                      syscon node.
    
    Example:
            timer: timer@18102000 {
                    compatible = "img,pistachio-gptimer";
                    reg = <0x18102000 0x100>;
                    interrupts = <GIC_SHARED 60 IRQ_TYPE_LEVEL_HIGH>,
                                 <GIC_SHARED 61 IRQ_TYPE_LEVEL_HIGH>,
                                 <GIC_SHARED 62 IRQ_TYPE_LEVEL_HIGH>,
                                 <GIC_SHARED 63 IRQ_TYPE_LEVEL_HIGH>;
                    clocks = <&clk_periph PERIPH_CLK_COUNTER_FAST>,
                             <&clk_periph PERIPH_CLK_COUNTER_SLOW>,
                             <&cr_periph SYS_CLK_TIMER>;
                    clock-names = "fast", "slow", "sys";
                    img,cr-periph = <&cr_periph>;
            };

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