FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/src/arm64/arm/juno-clocks.dtsi

     /*
      * ARM Juno Platform clocks
      *
      * Copyright (c) 2013-2014 ARM Ltd
      *
      * This file is licensed under a dual GPLv2 or BSD license.
      *
      */
     / {
            /* SoC fixed clocks */
            soc_uartclk: refclk7372800hz {
                    compatible = "fixed-clock";
                    #clock-cells = <0>;
                    clock-frequency = <7372800>;
                    clock-output-names = "juno:uartclk";
            };
    
            soc_usb48mhz: clk48mhz {
                    compatible = "fixed-clock";
                    #clock-cells = <0>;
                    clock-frequency = <48000000>;
                    clock-output-names = "clk48mhz";
            };
    
            soc_smc50mhz: clk50mhz {
                    compatible = "fixed-clock";
                    #clock-cells = <0>;
                    clock-frequency = <50000000>;
                    clock-output-names = "smc_clk";
            };
    
            soc_refclk100mhz: refclk100mhz {
                    compatible = "fixed-clock";
                    #clock-cells = <0>;
                    clock-frequency = <100000000>;
                    clock-output-names = "apb_pclk";
            };
    
            soc_faxiclk: refclk400mhz {
                    compatible = "fixed-clock";
                    #clock-cells = <0>;
                    clock-frequency = <400000000>;
                    clock-output-names = "faxi_clk";
            };
    };

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