bindings/spi/spi-bus.txt

3 SPI busses can be described with a node for the SPI master device
4 and a set of child nodes for each SPI slave on the bus.  For this
9 The SPI master node requires the following properties:
10 - #address-cells  - number of cells required to define a chip select
12 - #size-cells     - should be zero.
13 - compatible      - name of SPI bus controller following generic names
15 No other properties are required in the SPI bus node.  It is assumed
16 that a driver for an SPI bus device will understand that it is an SPI bus.
19 flexible and non-standardized, it is left out of this binding with the
24 SPI slave nodes must be children of the SPI master node and can
26 - reg             - (required) chip select address of device.
27 - compatible      - (required) name of SPI device following generic names
29 - spi-max-frequency - (required) Maximum SPI clocking speed of device in Hz
30 - spi-cpol        - (optional) Empty property indicating device requires
32 - spi-cpha        - (optional) Empty property indicating device requires
34 - spi-cs-high     - (optional) Empty property indicating device requires
39 		#address-cells = <1>;
40 		#size-cells = <0>;
41 		compatible = "fsl,mpc5200b-spi","fsl,mpc5200-spi";
44 		interrupt-parent = <&mpc5200_pic>;
46 		ethernet-switch@0 {
48 			spi-max-frequency = <1000000>;
54 			spi-max-frequency = <100000>;