1 Microchip PIC32 SPI Master controller
2
3 Required 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 sequence
7 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.txt
13
14 Optional properties:
15 - dmas: Two or more DMA channel specifiers following the convention outlined
16 in Documentation/devicetree/bindings/dma/dma.txt
17 - dma-names: Names for the dma channels. There must be at least one channel
18 named "spi-tx" for transmit and named "spi-rx" for receive.
19
20 Example:
21
22 spi1: 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 };
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