linux-stable/Documentation/devicetree/bindings/spi/brcm,spi-bcm-qspi.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/brcm,spi-bcm-qspi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom SPI controller

maintainers:
  - Kamal Dasu <kdasu.kdev@gmail.com>
  - Rafał Miłecki <rafal@milecki.pl>

description: |
  The Broadcom SPI controller is a SPI master found on various SOCs, including
  BRCMSTB (BCM7XXX), Cygnus, NSP and NS2. The Broadcom Master SPI hw IP consits
  of:
    MSPI : SPI master controller can read and write to a SPI slave device
    BSPI : Broadcom SPI in combination with the MSPI hw IP provides acceleration
           for flash reads and be configured to do single, double, quad lane
           io with 3-byte and 4-byte addressing support.

  Supported Broadcom SoCs have one instance of MSPI+BSPI controller IP.
  MSPI master can be used wihout BSPI. BRCMSTB SoCs have an additional instance
  of a MSPI master without the BSPI to use with non flash slave devices that
  use SPI protocol.  

allOf:
  - $ref: spi-controller.yaml#

properties:
  compatible:
    oneOf:
      - description: Second Instance of MSPI BRCMSTB SoCs
        items:
          - enum:
              - brcm,spi-bcm7425-qspi
              - brcm,spi-bcm7429-qspi
              - brcm,spi-bcm7435-qspi
              - brcm,spi-bcm7445-qspi
              - brcm,spi-bcm7216-qspi
              - brcm,spi-bcm7278-qspi
          - const: brcm,spi-bcm-qspi
          - const: brcm,spi-brcmstb-mspi
      - description: Second Instance of MSPI BRCMSTB SoCs
        items:
          - enum:
              - brcm,spi-brcmstb-qspi
              - brcm,spi-brcmstb-mspi
              - brcm,spi-nsp-qspi
              - brcm,spi-ns2-qspi
          - const: brcm,spi-bcm-qspi

  reg:
    minItems: 1
    maxItems: 5

  reg-names:
    minItems: 1
    items:
      - const: mspi
      - const: bspi
      - enum: [ intr_regs, intr_status_reg, cs_reg ]
      - enum: [ intr_regs, intr_status_reg, cs_reg ]
      - enum: [ intr_regs, intr_status_reg, cs_reg ]

  interrupts:
    minItems: 1
    maxItems: 7

  interrupt-names:
    oneOf:
      - minItems: 1
        items:
          - const: mspi_done
          - const: mspi_halted
          - const: spi_lr_fullness_reached
          - const: spi_lr_session_aborted
          - const: spi_lr_impatient
          - const: spi_lr_session_done
          - const: spi_lr_overread
      - const: spi_l1_intr

  clocks:
    maxItems: 1
    description: reference clock for this block

  native-endian:
    $ref: /schemas/types.yaml#/definitions/flag
    description: Defined when using BE SoC and device uses BE register read/write

unevaluatedProperties: false

required:
  - reg
  - reg-names
  - interrupts
  - interrupt-names

examples:
  - | # BRCMSTB SoC: SPI Master (MSPI+BSPI) for SPI-NOR access
    spi@f03e3400 {
            compatible = "brcm,spi-brcmstb-qspi", "brcm,spi-bcm-qspi";
            reg = <0xf03e3400 0x188>, <0xf03e3200 0x50>, <0xf03e0920 0x4>;
            reg-names = "mspi", "bspi", "cs_reg";
            interrupts = <0x5>, <0x6>, <0x1>, <0x2>, <0x3>, <0x4>, <0x0>;
            interrupt-parent = <&gic>;
            interrupt-names = "mspi_done",
                              "mspi_halted",
                              "spi_lr_fullness_reached",
                              "spi_lr_session_aborted",
                              "spi_lr_impatient",
                              "spi_lr_session_done",
                              "spi_lr_overread";
            clocks = <&hif_spi>;
            #address-cells = <0x1>;
            #size-cells = <0x0>;

            flash@0 {
                    #size-cells = <0x2>;
                    #address-cells = <0x2>;
                    compatible = "m25p80";
                    reg = <0x0>;
                    spi-max-frequency = <0x2625a00>;
                    spi-cpol;
                    spi-cpha;
            };
    };
  - | # BRCMSTB SoC: MSPI master for any SPI device
    spi@f0416000 {
            clocks = <&upg_fixed>;
            compatible = "brcm,spi-brcmstb-mspi", "brcm,spi-bcm-qspi";
            reg = <0xf0416000 0x180>;
            reg-names = "mspi";
            interrupts = <0x14>;
            interrupt-parent = <&irq0_aon_intc>;
            interrupt-names = "mspi_done";
            #address-cells = <1>;
            #size-cells = <0>;
    };
  - | # iProc SoC
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    spi@18027200 {
            compatible = "brcm,spi-nsp-qspi", "brcm,spi-bcm-qspi";
            reg = <0x18027200 0x184>,
                  <0x18027000 0x124>,
                  <0x1811c408 0x004>,
                  <0x180273a0 0x01c>;
            reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
            interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
            interrupt-names = "mspi_done",
                              "mspi_halted",
                              "spi_lr_fullness_reached",
                              "spi_lr_session_aborted",
                              "spi_lr_impatient",
                              "spi_lr_session_done";
            clocks = <&iprocmed>;
            num-cs = <2>;
            #address-cells = <1>;
            #size-cells = <0>;
    };
  - | # NS2 SoC
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    spi@66470200 {
            compatible = "brcm,spi-ns2-qspi", "brcm,spi-bcm-qspi";
            reg = <0x66470200 0x184>,
                  <0x66470000 0x124>,
                  <0x67017408 0x004>,
                  <0x664703a0 0x01c>;
            reg-names = "mspi", "bspi", "intr_regs", "intr_status_reg";
            interrupts = <GIC_SPI 419 IRQ_TYPE_LEVEL_HIGH>;
            interrupt-names = "spi_l1_intr";
            clocks = <&iprocmed>;
            num-cs = <2>;
            #address-cells = <1>;
            #size-cells = <0>;

            flash@0 {
                    #address-cells = <1>;
                    #size-cells = <1>;
                    compatible = "m25p80";
                    reg = <0x0>;
                    spi-max-frequency = <12500000>;
                    spi-cpol;
                    spi-cpha;
            };
    };