# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/mtd/qcom,msm-nand.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"

title: Qualcomm Technologies, Inc. QPIC nand controller

maintainers:
  - Pradeep P V K <quic_pragalla@quicinc.com>
  - Sarthak Garg <quic_sartgarg@quicinc.com>

properties:
  compatible:
    const: qcom,msm-nand

  reg:
    maxItems: 2

  reg-names:
    maxItems: 2

  clocks:
    items:
      - description: Core Clock.

  clock-names:
    items:
      - const: core_clk

  interrupts:
    maxItems: 1

  interrupt-names:
    const: bam_irq

  iommus:
    items:
      - description: phandle to apps_smmu node with sid mask.

  qcom,iommu-dma:
    description: |
      default
        Standard iommu translation behaviour. Calling iommu and DMA apis in
        atomic context is not allowed.
      bypass
        DMA APIs will use 1-to-1 translation between dma_addr and phys_addr.
      fastmap
        DMA APIs will run faster, but use several orders of magnitude more
        memory. Also allows using iommu and DMA apis in atomic context.
      atomic
        Allows using iommu and DMA apis in atomic context.
      disabled
        The iommu client is responsible for allocating an iommu domain.
    enum:
      - default
      - bypass
      - fastmap
      - atomic
      - disabled

  dma-coherent: true

  interconnects:
    items:
      - description: data path, nand to ddr.

  interconnect-names:
    items:
      - const: nand-ddr

  qcom,reg-adjustment-offset:
    description: base adjustment offset value for the version registers.
    $ref: /schemas/types.yaml#/definitions/uint32

  nvmem-cells:
    items:
      - description: Phandle to nvmem cell that contains 'boot_config'.

  nvmem-cell-names:
    items:
      - const: boot_conf

  qcom,boot_dev_bits:
    description: Number of FAST_BOOT bits in boot_config register.
    $ref: /schemas/types.yaml#/definitions/uint32

  qcom,nand_boot:
    description: boot device detection values for NAND.
    $ref: /schemas/types.yaml#/definitions/uint32-array

required:
  - compatible
  - reg
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/qcom,rpmh.h>
    #include <dt-bindings/interconnect/qcom,sdx75.h>
    qcom,nand@f9af0000 {
      compatible = "qcom,msm-nand";
      reg = <0xf9af0000 0x1000>,
            <0xf9ac4000 0x8000>;
      reg-names = "nand_phys",
                  "bam_phys";
      qcom,reg-adjustment-offset = <0x4000>;

      interrupts = <0 279 0>;
      interrupt-names = "bam_irq";

      interconnects = <&system_noc MASTER_QPIC &mc_virt SLAVE_EBI1>;
      interconnect-names = "nand-ddr";

      clock-names = "core_clk";
      clocks = <&rpmhcc RPMH_QPIC_CLK>;

      nvmem-cells = <&boot_config>;
      nvmem-cell-names = "boot_conf";
      qcom,boot_dev_bits = <0x4>;
      qcom,nand_boot = <0x0>;

      iommus = <&apps_smmu 0x100 0x3>;
      qcom,iommu-dma = "atomic";
      dma-coherent;

    };