FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/armada3700-xtal-clock.txt

     * Xtal Clock bindings for Marvell Armada 37xx SoCs
     
     Marvell Armada 37xx SoCs allow to determine the xtal clock frequencies by
     reading the gpio latch register.
     
     This node must be a subnode of the node exposing the register address
     of the GPIO block where the gpio latch is located.
     See Documentation/devicetree/bindings/pinctrl/marvell,armada-37xx-pinctrl.txt
     
    Required properties:
    - compatible : shall be one of the following:
            "marvell,armada-3700-xtal-clock"
    - #clock-cells : from common clock binding; shall be set to 0
    
    Optional properties:
    - clock-output-names : from common clock binding; allows overwrite default clock
            output names ("xtal")
    
    Example:
    pinctrl_nb: pinctrl-nb@13800 {
            compatible = "armada3710-nb-pinctrl", "syscon", "simple-mfd";
            reg = <0x13800 0x100>, <0x13C00 0x20>;
    
            xtalclk: xtal-clk {
                    compatible = "marvell,armada-3700-xtal-clock";
                    clock-output-names = "xtal";
                    #clock-cells = <0>;
            };
    };

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