* Clock bindings for Axis ARTPEC-6 chip The bindings are based on the clock provider binding in Documentation/devicetree/bindings/clock/clock-bindings.txt External clocks: ---------------- There are two external inputs to the main clock controller which should be provided using the common clock bindings. - "sys_refclk": External 50 Mhz oscillator (required) - "i2s_refclk": Alternate audio reference clock (optional). Main clock controller --------------------- Required properties: - #clock-cells: Should be <1> See dt-bindings/clock/axis,artpec6-clkctrl.h for the list of valid identifiers. - compatible: Should be "axis,artpec6-clkctrl" - reg: Must contain the base address and length of the system controller - clocks: Must contain a phandle entry for each clock in clock-names - clock-names: Must include the external oscillator ("sys_refclk"). Optional ones are the audio reference clock ("i2s_refclk") and the audio fractional dividers ("frac_clk0" and "frac_clk1"). Examples: ext_clk: ext_clk { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <50000000>; }; clkctrl: clkctrl@f8000000 { #clock-cells = <1>; compatible = "axis,artpec6-clkctrl"; reg = <0xf8000000 0x48>; clocks = <&ext_clk>; clock-names = "sys_refclk"; };