ingenic,nand.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Ingenic SoCs NAND controller devicetree bindings
    8 
    9 maintainers:
   10   - Paul Cercueil <paul@crapouillou.net>
   11 
   12 allOf:
   13   - $ref: nand-controller.yaml#
   14   - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml#
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - ingenic,jz4740-nand
   20       - ingenic,jz4725b-nand
   21       - ingenic,jz4780-nand
   22 
   23   reg:
   24     items:
   25       - description: Bank number, offset and size of first attached NAND chip
   26       - description: Bank number, offset and size of second attached NAND chip
   27       - description: Bank number, offset and size of third attached NAND chip
   28       - description: Bank number, offset and size of fourth attached NAND chip
   29     minItems: 1
   30 
   31   ecc-engine: true
   32 
   33   partitions:
   34     type: object
   35     description:
   36       Node containing description of fixed partitions.
   37       See Documentation/devicetree/bindings/mtd/partition.txt
   38 
   39 patternProperties:
   40   "^nand@[a-f0-9]$":
   41     type: object
   42     properties:
   43       rb-gpios:
   44         description: GPIO specifier for the busy pin.
   45         maxItems: 1
   46 
   47       wp-gpios:
   48         description: GPIO specifier for the write-protect pin.
   49         maxItems: 1
   50 
   51 required:
   52   - compatible
   53   - reg
   54 
   55 unevaluatedProperties: false
   56 
   57 examples:
   58   - |
   59     #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
   60     memory-controller@13410000 {
   61       compatible = "ingenic,jz4780-nemc";
   62       reg = <0x13410000 0x10000>;
   63       #address-cells = <2>;
   64       #size-cells = <1>;
   65       ranges = <1 0 0x1b000000 0x1000000>,
   66          <2 0 0x1a000000 0x1000000>,
   67          <3 0 0x19000000 0x1000000>,
   68          <4 0 0x18000000 0x1000000>,
   69          <5 0 0x17000000 0x1000000>,
   70          <6 0 0x16000000 0x1000000>;
   71 
   72       clocks = <&cgu JZ4780_CLK_NEMC>;
   73 
   74       nand-controller@1 {
   75         compatible = "ingenic,jz4780-nand";
   76         reg = <1 0 0x1000000>;
   77 
   78         #address-cells = <1>;
   79         #size-cells = <0>;
   80 
   81         ecc-engine = <&bch>;
   82 
   83         ingenic,nemc-tAS = <10>;
   84         ingenic,nemc-tAH = <5>;
   85         ingenic,nemc-tBP = <10>;
   86         ingenic,nemc-tAW = <15>;
   87         ingenic,nemc-tSTRV = <100>;
   88 
   89         pinctrl-names = "default";
   90         pinctrl-0 = <&pins_nemc>;
   91 
   92         nand@1 {
   93           reg = <1>;
   94 
   95           nand-ecc-step-size = <1024>;
   96           nand-ecc-strength = <24>;
   97           nand-ecc-mode = "hw";
   98           nand-on-flash-bbt;
   99 
  100           pinctrl-names = "default";
  101           pinctrl-0 = <&pins_nemc_cs1>;
  102 
  103           partitions {
  104             compatible = "fixed-partitions";
  105             #address-cells = <2>;
  106             #size-cells = <2>;
  107 
  108             partition@0 {
  109               label = "u-boot-spl";
  110               reg = <0x0 0x0 0x0 0x800000>;
  111             };
  112 
  113             partition@800000 {
  114               label = "u-boot";
  115               reg = <0x0 0x800000 0x0 0x200000>;
  116             };
  117 
  118             partition@a00000 {
  119               label = "u-boot-env";
  120               reg = <0x0 0xa00000 0x0 0x200000>;
  121             };
  122 
  123             partition@c00000 {
  124               label = "boot";
  125               reg = <0x0 0xc00000 0x0 0x4000000>;
  126             };
  127 
  128             partition@4c00000 {
  129               label = "system";
  130               reg = <0x0 0x4c00000 0x1 0xfb400000>;
  131             };
  132           };
  133         };
  134       };
  135     };

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sys/contrib/device-tree/Bindings/mtd/ingenic,nand.yaml