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1* Xtal Clock bindings for Marvell Armada 37xx SoCs2 3Marvell Armada 37xx SoCs allow to determine the xtal clock frequencies by4reading the gpio latch register.5 6This node must be a subnode of the node exposing the register address7of the GPIO block where the gpio latch is located.8See Documentation/devicetree/bindings/pinctrl/marvell,armada-37xx-pinctrl.txt9 10Required properties:11- compatible : shall be one of the following:12 "marvell,armada-3700-xtal-clock"13- #clock-cells : from common clock binding; shall be set to 014 15Optional properties:16- clock-output-names : from common clock binding; allows overwrite default clock17 output names ("xtal")18 19Example:20pinctrl_nb: pinctrl-nb@13800 {21 compatible = "armada3710-nb-pinctrl", "syscon", "simple-mfd";22 reg = <0x13800 0x100>, <0x13C00 0x20>;23 24 xtalclk: xtal-clk {25 compatible = "marvell,armada-3700-xtal-clock";26 clock-output-names = "xtal";27 #clock-cells = <0>;28 };29};30