dts/bindings/flash_controller/st,stm32-xspi-nor.yaml

# Copyright (c) 2021 - 2024 STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

description: |
    STM32 XSPI Flash controller supporting the JEDEC CFI interface

    Representation of a serial flash on a xspi bus:

        mx25lm51245: xspi-nor-flash@70000000 {
                compatible = "st,stm32-xspi-nor";
                reg = <0x70000000 DT_SIZE_M(64)>; /* 512 Mbits */
                data-mode = <XSPI_OCTO_MODE>; /* access on 8 data lines */
                data-rate = <XSPI_DTR_TRANSFER>; /* access in DTR */
                ospi-max-frequency = <DT_FREQ_M(50)>;
                status = "okay";
        };

compatible: "st,stm32-xspi-nor"

include:
  - name: st,stm32-ospi-nor.yaml
    property-blocklist:
      - spi-bus-width
      - data-rate
properties:
  spi-bus-width:
    type: int
    required: true
    description: |
     The width of XSPI bus to which flash memory is connected.

     Possible values are :
      - XSPI_SPI_MODE  <1> = SPI mode on 1 data line
      - XSPI_DUAL_MODE <2> = Dual mode on 2 data lines
      - XSPI_QUAD_MODE <4> = Quad mode on 4 data lines
      - XSPI_OCTO_MODE <8> = Octo mode on 8 data lines
    enum:
      - 1
      - 2
      - 4
      - 8
  data-rate:
    type: int
    required: true
    description: |
     The SPI data Rate is STR or DTR

     Possible values are :
      - XSPI_STR_TRANSFER <1> = Single Rate Transfer
      - XSPI_DTR_TRANSFER <2> = Dual Rate Transfer (only with XSPI_OCTO_MODE)
    enum:
      - 1
      - 2

  ncs-line:
    type: int
    default: 1
    enum:
      - 1
      - 2
    description: |
      Specifies which nCS line of the XSPI IO Manager is connected to the Flash.