Documentation/devicetree/bindings/spi/microchip,spi-pic32.txt

   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 };