FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/c6x/clocks.txt

     C6X PLL Clock Controllers
     -------------------------
     
     This is a first-cut support for the SoC clock controllers. This is still
     under development and will probably change as the common device tree
     clock support is added to the kernel.
     
     Required properties:
     
    - compatible: "ti,c64x+pll"
        May also have SoC-specific value to support SoC-specific initialization
        in the driver. One of:
            "ti,c6455-pll"
            "ti,c6457-pll"
            "ti,c6472-pll"
            "ti,c6474-pll"
    
    - reg: base address and size of register area
    - clock-frequency: input clock frequency in hz
    
    
    Optional properties:
    
    - ti,c64x+pll-bypass-delay: CPU cycles to delay when entering bypass mode
    
    - ti,c64x+pll-reset-delay:  CPU cycles to delay after PLL reset
    
    - ti,c64x+pll-lock-delay:   CPU cycles to delay after PLL frequency change
    
    Example:
    
            clock-controller@29a0000 {
                    compatible = "ti,c6472-pll", "ti,c64x+pll";
                    reg = <0x029a0000 0x200>;
                    clock-frequency = <25000000>;
    
                    ti,c64x+pll-bypass-delay = <200>;
                    ti,c64x+pll-reset-delay = <12000>;
                    ti,c64x+pll-lock-delay = <80000>;
            };

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