dts/bindings/spi/atmel,sam-spi.yaml

# Copyright (c) 2018, qianfan Zhao
# SPDX-License-Identifier: Apache-2.0

description: Atmel SAM SPI controller

compatible: "atmel,sam-spi"

include:
    - name: spi-controller.yaml
    - name: pinctrl-device.yaml

properties:
    reg:
      required: true

    interrupts:
      required: true

    peripheral-id:
      type: int
      description: peripheral ID
      required: true

    loopback:
      type: boolean
      description: |
        Connects TX to RX internally creating a loop back connection. Useful
        for testing.

    dmas:
      description: |
        TX & RX dma specifiers.  Each specifier will have a phandle
        reference to the dma controller, the channel number, and peripheral
        trigger source. The channel number is arbitrary but must not be
        reused. The number of channels available is device dependent.

        For example dmas for TX and RX may look like
           dmas = <&xdmac 1 DMA_PERID_SPI0_TX>, <&xdmac 2 DMA_PERID_SPI0_RX>;

    dma-names:
      description: |
        This should be "tx" and "rx" and should match the order given for
        dmas.

        For example using the example dmas, an example dma-names would be
           dma-names = "tx", "rx";