5 - compatible: Must be "jcore,spi2".
7 - reg: Memory region for registers.
9 - #address-cells: Must be 1.
11 - #size-cells: Must be 0.
15 - clocks: If a phandle named "ref_clk" is present, SPI clock speed
16 programming is relative to the frequency of the indicated clock.
17 Necessary only if the input clock rate is something other than a
20 - clock-names: Clock names, one for each phandle in clocks.
22 See spi-bus.txt for additional properties not specific to this device.
27 compatible = "jcore,spi2";
31 spi-max-frequency = <25000000>;
33 clock-names = "ref_clk";