dts/bindings/spi/microchip,xec-qmspi-ldma.yaml

# Copyright (c) 2018, Google LLC.
# Copyright (c) 2021, Microchip Technology Inc.
# SPDX-License-Identifier: Apache-2.0

description: Microchip XEC QMSPI controller with local DMA

compatible: "microchip,xec-qmspi-ldma"

include: [spi-controller.yaml, pinctrl-device.yaml]

properties:
    reg:
      required: true

    girqs:
      type: array
      required: true
      description: |
        An array of integers encoding each interrupt signal connection.
        This information includes the aggregated GIRQ number, GIRQ bit
        position, aggregated GIRQ NVIC connection, and direct NVIC
        connection of the GIRQ bit.

    pcrs:
      type: array
      required: true
      description: |
        A two entry integer array containing the QMSPI PCR sleep register
        index and bit position.

    pinctrl-0:
      required: true

    pinctrl-names:
      required: true

    lines:
      type: int
      required: false
      description: |
        QMSPI data lines 1, 2, or 4. 1 data line is full-duplex
        MOSI and MISO or half-duplex on MOSI only. Lines set to 2
        or 4 indicate dual or quad I/O modes. Defaults to 1.

    port_sel:
      type: int
      required: false
      description: |
        SPI Port 0, 1, or 2. Port 0 is the shared SPI, port 1 is
        the private SPI, and port 2 is the internal SPI port for
        chip configurations with an embedded SPI flash. Defaults
        to port 0 (shared SPI port).

    chip_select:
      type: int
      required: false
      description: |
        Use QMSPI CS0# or CS1#. Port 0 supports both chip selects.
        Ports 1 and 2 implement CS0# only. Defaults to CS0#.

    dcsckon:
      type: int
      required: false
      description: |
        Delay in QMSPI main clocks from CS# assertion to first clock edge.
        If not present use hardware default value. Refer to chip documention
        for QMSPI input clock frequency.

    dckcsoff:
      type: int
      required: false
      description: |
        Delay in QMSPI main clocks from last clock edge to CS# de-assertion.
        If not presetn use hardware default value. Refer to chip documention
        for QMSPI input clock frequency.

    dldh:
      type: int
      required: false
      description: |
        Delay in QMSPI main clocks from CS# de-assertion to driving HOLD#
        and WP#. If not present use hardware default value. Refer to chip
        documention for QMSPI input clock frequency.

    dcsda:
      type: int
      required: false
      description: |
        Delay in QMSPI main clocks from CS# de-assertion to CS# assertion.
        If not present use hardware default value. Refer to chip documention
        for QMSPI input clock frequency.

    cs1-freq:
      type: int
      required: false
      description: |
        Allows different frequencies for CS#0 and CS1# devices. This applies
        to ports implementing CS1#.

    tctradj:
      type: int
      required: false
      description: |
        An optional signed 8-bit value for adjusting the QMSPI control signal
        timing tap.

    tsckadj:
      type: int
      required: false
      description: |
        An optional signed 8-bit value for adjusting the QMSPI clock signal
        timing tap.