mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34 lines
1.3 KiB
34 lines
1.3 KiB
Microchip PIC32 SPI Master controller |
|
|
|
Required properties: |
|
- compatible: Should be "microchip,pic32mzda-spi". |
|
- reg: Address and length of register space for the device. |
|
- interrupts: Should contain all three spi interrupts in sequence |
|
of <fault-irq>, <receive-irq>, <transmit-irq>. |
|
- interrupt-names: Should be "fault", "rx", "tx" in order. |
|
- clocks: Phandle of the clock generating SPI clock on the bus. |
|
- clock-names: Should be "mck0". |
|
- cs-gpios: Specifies the gpio pins to be used for chipselects. |
|
See: Documentation/devicetree/bindings/spi/spi-bus.txt |
|
|
|
Optional properties: |
|
- dmas: Two or more DMA channel specifiers following the convention outlined |
|
in Documentation/devicetree/bindings/dma/dma.txt |
|
- dma-names: Names for the dma channels. There must be at least one channel |
|
named "spi-tx" for transmit and named "spi-rx" for receive. |
|
|
|
Example: |
|
|
|
spi1: spi@1f821000 { |
|
compatible = "microchip,pic32mzda-spi"; |
|
reg = <0x1f821000 0x200>; |
|
interrupts = <109 IRQ_TYPE_LEVEL_HIGH>, |
|
<110 IRQ_TYPE_LEVEL_HIGH>, |
|
<111 IRQ_TYPE_LEVEL_HIGH>; |
|
interrupt-names = "fault", "rx", "tx"; |
|
clocks = <&PBCLK2>; |
|
clock-names = "mck0"; |
|
cs-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>; |
|
dmas = <&dma 134>, <&dma 135>; |
|
dma-names = "spi-rx", "spi-tx"; |
|
};
|
|
|