42 lines · plain
1* Clock bindings for Axis ARTPEC-6 chip2 3The bindings are based on the clock provider binding in4Documentation/devicetree/bindings/clock/clock-bindings.txt5 6External clocks:7----------------8 9There are two external inputs to the main clock controller which should be10provided using the common clock bindings.11- "sys_refclk": External 50 Mhz oscillator (required)12- "i2s_refclk": Alternate audio reference clock (optional).13 14Main clock controller15---------------------16 17Required properties:18- #clock-cells: Should be <1>19 See dt-bindings/clock/axis,artpec6-clkctrl.h for the list of valid identifiers.20- compatible: Should be "axis,artpec6-clkctrl"21- reg: Must contain the base address and length of the system controller22- clocks: Must contain a phandle entry for each clock in clock-names23- clock-names: Must include the external oscillator ("sys_refclk"). Optional24 ones are the audio reference clock ("i2s_refclk") and the audio fractional25 dividers ("frac_clk0" and "frac_clk1").26 27Examples:28 29ext_clk: ext_clk {30 #clock-cells = <0>;31 compatible = "fixed-clock";32 clock-frequency = <50000000>;33};34 35clkctrl: clkctrl@f8000000 {36 #clock-cells = <1>;37 compatible = "axis,artpec6-clkctrl";38 reg = <0xf8000000 0x48>;39 clocks = <&ext_clk>;40 clock-names = "sys_refclk";41};42