Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml

# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/nvme/apple,nvme-ans.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Apple ANS NVM Express host controller

maintainers:
  - Sven Peter <sven@svenpeter.dev>

properties:
  compatible:
    items:
      - enum:
          - apple,t8103-nvme-ans2
          - apple,t6000-nvme-ans2
      - const: apple,nvme-ans2

  reg:
    items:
      - description: NVMe and NVMMU registers
      - description: ANS2 co-processor control registers

  reg-names:
    items:
      - const: nvme
      - const: ans

  resets:
    maxItems: 1

  power-domains:
    # two domains for t8103, three for t6000
    minItems: 2
    items:
      - description: power domain for the NVMe controller.
      - description: power domain for the first PCIe bus connecting the NVMe
          controller to the storage modules.
      - description: optional power domain for the second PCIe bus
          connecting the NVMe controller to the storage modules.

  power-domain-names:
    minItems: 2
    items:
      - const: ans
      - const: apcie0
      - const: apcie1

  mboxes:
    maxItems: 1
    description: Mailbox of the ANS2 co-processor

  interrupts:
    maxItems: 1

  apple,sart:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: |
      Reference to the SART address filter.

      The SART address filter is documented in iommu/apple,sart.yaml.

if:
  properties:
    compatible:
      contains:
        const: apple,t8103-nvme-ans2
then:
  properties:
    power-domains:
      maxItems: 2
    power-domain-names:
      maxItems: 2
else:
  properties:
    power-domains:
      minItems: 3
    power-domain-names:
      minItems: 3

required:
  - compatible
  - reg
  - reg-names
  - resets
  - power-domains
  - power-domain-names
  - mboxes
  - interrupts
  - apple,sart

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/apple-aic.h>
    #include <dt-bindings/interrupt-controller/irq.h>

    nvme@7bcc0000 {
      compatible = "apple,t8103-nvme-ans2", "apple,nvme-ans2";
      reg = <0x7bcc0000 0x40000>, <0x77400000 0x4000>;
      reg-names = "nvme", "ans";
      interrupts = <AIC_IRQ 590 IRQ_TYPE_LEVEL_HIGH>;
      mboxes = <&ans>;
      apple,sart = <&sart>;
      power-domains = <&ps_ans2>, <&ps_apcie_st>;
      power-domain-names = "ans", "apcie0";
      resets = <&ps_ans2>;
    };