rockchip,nand-controller.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/rockchip,nand-controller.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Rockchip SoCs NAND FLASH Controller (NFC)
    8 
    9 allOf:
   10   - $ref: "nand-controller.yaml#"
   11 
   12 maintainers:
   13   - Heiko Stuebner <heiko@sntech.de>
   14 
   15 properties:
   16   compatible:
   17     oneOf:
   18       - const: rockchip,px30-nfc
   19       - const: rockchip,rk2928-nfc
   20       - const: rockchip,rv1108-nfc
   21       - items:
   22           - const: rockchip,rk3036-nfc
   23           - const: rockchip,rk2928-nfc
   24       - items:
   25           - const: rockchip,rk3308-nfc
   26           - const: rockchip,rv1108-nfc
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   interrupts:
   32     maxItems: 1
   33 
   34   clocks:
   35     minItems: 1
   36     items:
   37       - description: Bus Clock
   38       - description: Module Clock
   39 
   40   clock-names:
   41     minItems: 1
   42     items:
   43       - const: ahb
   44       - const: nfc
   45 
   46   assigned-clocks:
   47     maxItems: 1
   48 
   49   assigned-clock-rates:
   50     maxItems: 1
   51 
   52   power-domains:
   53     maxItems: 1
   54 
   55 patternProperties:
   56   "^nand@[0-7]$":
   57     type: object
   58     properties:
   59       reg:
   60         minimum: 0
   61         maximum: 7
   62 
   63       nand-ecc-mode:
   64         const: hw
   65 
   66       nand-ecc-step-size:
   67         const: 1024
   68 
   69       nand-ecc-strength:
   70         enum: [16, 24, 40, 60, 70]
   71         description: |
   72           The ECC configurations that can be supported are as follows.
   73             NFC v600 ECC 16, 24, 40, 60
   74               RK2928, RK3066, RK3188
   75 
   76             NFC v622 ECC 16, 24, 40, 60
   77               RK3036, RK3128
   78 
   79             NFC v800 ECC 16
   80               RK3308, RV1108
   81 
   82             NFC v900 ECC 16, 40, 60, 70
   83               RK3326, PX30
   84 
   85       nand-bus-width:
   86         const: 8
   87 
   88       rockchip,boot-blks:
   89         $ref: /schemas/types.yaml#/definitions/uint32
   90         minimum: 2
   91         default: 16
   92         description:
   93           The NFC driver need this information to select ECC
   94           algorithms supported by the boot ROM.
   95           Only used in combination with 'nand-is-boot-medium'.
   96 
   97       rockchip,boot-ecc-strength:
   98         enum: [16, 24, 40, 60, 70]
   99         $ref: /schemas/types.yaml#/definitions/uint32
  100         description: |
  101           If specified it indicates that a different BCH/ECC setting is
  102           supported by the boot ROM.
  103             NFC v600 ECC 16, 24
  104               RK2928, RK3066, RK3188
  105 
  106             NFC v622 ECC 16, 24, 40, 60
  107               RK3036, RK3128
  108 
  109             NFC v800 ECC 16
  110               RK3308, RV1108
  111 
  112             NFC v900 ECC 16, 70
  113               RK3326, PX30
  114 
  115           Only used in combination with 'nand-is-boot-medium'.
  116 
  117 required:
  118   - compatible
  119   - reg
  120   - interrupts
  121   - clocks
  122   - clock-names
  123 
  124 unevaluatedProperties: false
  125 
  126 examples:
  127   - |
  128     #include <dt-bindings/clock/rk3308-cru.h>
  129     #include <dt-bindings/interrupt-controller/arm-gic.h>
  130     nfc: nand-controller@ff4b0000 {
  131       compatible = "rockchip,rk3308-nfc",
  132                    "rockchip,rv1108-nfc";
  133       reg = <0xff4b0000 0x4000>;
  134       interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
  135       clocks = <&cru HCLK_NANDC>, <&cru SCLK_NANDC>;
  136       clock-names = "ahb", "nfc";
  137       assigned-clocks = <&clks SCLK_NANDC>;
  138       assigned-clock-rates = <150000000>;
  139 
  140       pinctrl-0 = <&flash_ale &flash_bus8 &flash_cle &flash_csn0
  141                    &flash_rdn &flash_rdy &flash_wrn>;
  142       pinctrl-names = "default";
  143 
  144       #address-cells = <1>;
  145       #size-cells = <0>;
  146 
  147       nand@0 {
  148         reg = <0>;
  149         label = "rk-nand";
  150         nand-bus-width = <8>;
  151         nand-ecc-mode = "hw";
  152         nand-ecc-step-size = <1024>;
  153         nand-ecc-strength = <16>;
  154         nand-is-boot-medium;
  155         rockchip,boot-blks = <8>;
  156         rockchip,boot-ecc-strength = <16>;
  157       };
  158     };
  159 
  160 ...

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