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1Microchip PIC32 SPI Master controller2 3Required properties:4- compatible: Should be "microchip,pic32mzda-spi".5- reg: Address and length of register space for the device.6- interrupts: Should contain all three spi interrupts in sequence7 of <fault-irq>, <receive-irq>, <transmit-irq>.8- interrupt-names: Should be "fault", "rx", "tx" in order.9- clocks: Phandle of the clock generating SPI clock on the bus.10- clock-names: Should be "mck0".11- cs-gpios: Specifies the gpio pins to be used for chipselects.12 See: Documentation/devicetree/bindings/spi/spi-bus.txt13 14Optional properties:15- dmas: Two or more DMA channel specifiers following the convention outlined16 in Documentation/devicetree/bindings/dma/dma.txt17- dma-names: Names for the dma channels. There must be at least one channel18 named "spi-tx" for transmit and named "spi-rx" for receive.19 20Example:21 22spi1: spi@1f821000 {23 compatible = "microchip,pic32mzda-spi";24 reg = <0x1f821000 0x200>;25 interrupts = <109 IRQ_TYPE_LEVEL_HIGH>,26 <110 IRQ_TYPE_LEVEL_HIGH>,27 <111 IRQ_TYPE_LEVEL_HIGH>;28 interrupt-names = "fault", "rx", "tx";29 clocks = <&PBCLK2>;30 clock-names = "mck0";31 cs-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>;32 dmas = <&dma 134>, <&dma 135>;33 dma-names = "spi-rx", "spi-tx";34};35