1d524dac9SGrant Likely* SPI (Serial Peripheral Interface) 2d524dac9SGrant Likely 3d524dac9SGrant LikelyRequired properties: 4d524dac9SGrant Likely- cell-index : QE SPI subblock index. 5d524dac9SGrant Likely 0: QE subblock SPI1 6d524dac9SGrant Likely 1: QE subblock SPI2 7d524dac9SGrant Likely- compatible : should be "fsl,spi". 8d524dac9SGrant Likely- mode : the SPI operation mode, it can be "cpu" or "cpu-qe". 9d524dac9SGrant Likely- reg : Offset and length of the register set for the device 10d524dac9SGrant Likely- interrupts : <a b> where a is the interrupt number and b is a 11d524dac9SGrant Likely field that represents an encoding of the sense and level 12d524dac9SGrant Likely information for the interrupt. This should be encoded based on 13d524dac9SGrant Likely the information in section 2) depending on the type of interrupt 14d524dac9SGrant Likely controller you have. 15d524dac9SGrant Likely- interrupt-parent : the phandle for the interrupt controller that 16d524dac9SGrant Likely services interrupts for this device. 17d524dac9SGrant Likely 18d524dac9SGrant LikelyOptional properties: 19d524dac9SGrant Likely- gpios : specifies the gpio pins to be used for chipselects. 20d524dac9SGrant Likely The gpios will be referred to as reg = <index> in the SPI child nodes. 21d524dac9SGrant Likely If unspecified, a single SPI device without a chip select can be used. 22d524dac9SGrant Likely 23d524dac9SGrant LikelyExample: 24d524dac9SGrant Likely spi@4c0 { 25d524dac9SGrant Likely cell-index = <0>; 26d524dac9SGrant Likely compatible = "fsl,spi"; 27d524dac9SGrant Likely reg = <4c0 40>; 28d524dac9SGrant Likely interrupts = <82 0>; 29d524dac9SGrant Likely interrupt-parent = <700>; 30d524dac9SGrant Likely mode = "cpu"; 31d524dac9SGrant Likely gpios = <&gpio 18 1 // device reg=<0> 32d524dac9SGrant Likely &gpio 19 1>; // device reg=<1> 33d524dac9SGrant Likely }; 34d524dac9SGrant Likely 35d524dac9SGrant Likely 36d524dac9SGrant Likely* eSPI (Enhanced Serial Peripheral Interface) 37d524dac9SGrant Likely 38d524dac9SGrant LikelyRequired properties: 39d524dac9SGrant Likely- compatible : should be "fsl,mpc8536-espi". 40d524dac9SGrant Likely- reg : Offset and length of the register set for the device. 41d524dac9SGrant Likely- interrupts : should contain eSPI interrupt, the device has one interrupt. 42d524dac9SGrant Likely- fsl,espi-num-chipselects : the number of the chipselect signals. 43d524dac9SGrant Likely 44d524dac9SGrant LikelyExample: 45d524dac9SGrant Likely spi@110000 { 46d524dac9SGrant Likely #address-cells = <1>; 47d524dac9SGrant Likely #size-cells = <0>; 48d524dac9SGrant Likely compatible = "fsl,mpc8536-espi"; 49d524dac9SGrant Likely reg = <0x110000 0x1000>; 50d524dac9SGrant Likely interrupts = <53 0x2>; 51d524dac9SGrant Likely interrupt-parent = <&mpic>; 52d524dac9SGrant Likely fsl,espi-num-chipselects = <4>; 53d524dac9SGrant Likely }; 54