# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/mtd/allwinner,sun4i-a10-nand.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A10 NAND Controller

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Maxime Ripard <mripard@kernel.org>

properties:
  compatible:
    enum:
      - allwinner,sun4i-a10-nand
      - allwinner,sun8i-a23-nand-controller
      - allwinner,sun50i-h616-nand-controller

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 2
    items:
      - description: Bus Clock
      - description: Module Clock
      - description: ECC Clock
      - description: MBus Clock

  clock-names:
    minItems: 2
    items:
      - const: ahb
      - const: mod
      - const: ecc
      - const: mbus

  resets:
    maxItems: 1

  reset-names:
    const: ahb

  dmas:
    maxItems: 1

  dma-names:
    const: rxtx

patternProperties:
  "^nand@[a-f0-9]$":
    type: object
    $ref: raw-nand-chip.yaml
    properties:
      reg:
        minimum: 0
        maximum: 7

      nand-ecc-algo:
        const: bch

      nand-ecc-step-size:
        enum: [ 512, 1024 ]

      nand-ecc-strength:
        maximum: 80

      allwinner,rb:
        description:
          Contains the native Ready/Busy IDs.
        $ref: /schemas/types.yaml#/definitions/uint32-array
        minItems: 1
        maxItems: 2
        items:
          minimum: 0
          maximum: 1

    unevaluatedProperties: false

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

unevaluatedProperties: false

allOf:
  - $ref: nand-controller.yaml

  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun4i-a10-nand
              - allwinner,sun8i-a23-nand-controller
    then:
      properties:
        clocks:
          maxItems: 2
        clock-names:
          maxItems: 2

  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun50i-h616-nand-controller
    then:
      properties:
        clocks:
          minItems: 4
        clock-names:
          minItems: 4

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/sun6i-rtc.h>
    #include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
    #include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
 
    nand-controller@1c03000 {
        compatible = "allwinner,sun8i-a23-nand-controller";
        reg = <0x01c03000 0x1000>;
        interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&ccu CLK_BUS_NAND>, <&ccu CLK_NAND>;
        clock-names = "ahb", "mod";
        resets = <&ccu RST_BUS_NAND>;
        reset-names = "ahb";
        dmas = <&dma 5>;
        dma-names = "rxtx";
        pinctrl-names = "default";
        pinctrl-0 = <&nand_pins &nand_cs0_pin &nand_rb0_pin>;
        #address-cells = <1>;
        #size-cells = <0>;
    };

...