dts/bindings/qspi/st,stm32-qspi.yaml

# Copyright (c) 2020, Linaro limited
# SPDX-License-Identifier: Apache-2.0

description: |
    STM32 QSPI device representation. A stm32 quadspi node would typically
    looks to this:

        &quadspi {
            pinctrl-0 = <&quadspi_clk_pe10 &quadspi_ncs_pe11
                         &quadspi_bk1_io0_pe12 &quadspi_bk1_io1_pe13
                         &quadspi_bk1_io2_pe14 &quadspi_bk1_io3_pe15>;

            dmas = <&dma1 5 5 0x0000 0x03>;
            dma-names = "tx_rx";

            status = "okay";
        };

compatible: "st,stm32-qspi"

include: [base.yaml, pinctrl-device.yaml]

bus: qspi

properties:
    reg:
      required: true

    interrupts:
      required: true

    pinctrl-0:
      required: true

    pinctrl-names:
      required: true

    dmas:
      description: |
        Optional DMA channel specifier. If DMA should be used, specifier should
        hold a phandle reference to the dma controller, the channel number,
        the slot number, channel configuration and finally features.

        For example dmas for TX/RX on QSPI
           dmas = <&dma1 5 5 0x0000 0x03>;

    dma-names:
      description: |
        DMA channel name. If DMA should be used, expected value is "tx_rx".

        For example
           dma-names = "tx_rx";

    flash-id:
      type: int
      required: false
      description: |
        FLash ID number. This number, if defined, helps to select the right
        QSPI GPIO banks (defined as 'quadspi_bk[12]' in pinctrl property)
        to communicate with flash memory.

        For example
           flash-id = <2>;