Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/mtd/amlogic,meson-nand.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
   8
   9 allOf:
  10   - $ref: nand-controller.yaml
  11
  12 maintainers:
  13   - liang.yang@amlogic.com
  14
  15 properties:
  16   compatible:
  17     enum:
  18       - amlogic,meson-gxl-nfc
  19       - amlogic,meson-axg-nfc
  20
  21   reg:
  22     maxItems: 2
  23
  24   reg-names:
  25     items:
  26       - const: nfc
  27       - const: emmc
  28
  29   interrupts:
  30     maxItems: 1
  31
  32   clocks:
  33     minItems: 2
  34
  35   clock-names:
  36     items:
  37       - const: core
  38       - const: device
  39
  40 patternProperties:
  41   "^nand@[0-7]$":
  42     type: object
  43     $ref: raw-nand-chip.yaml
  44     properties:
  45       reg:
  46         minimum: 0
  47         maximum: 1
  48
  49       nand-ecc-mode:
  50         const: hw
  51
  52       nand-ecc-step-size:
  53         enum: [512, 1024]
  54
  55       nand-ecc-strength:
  56         enum: [8, 16, 24, 30, 40, 50, 60]
  57         description: |
  58           The ECC configurations that can be supported are as follows.
  59             meson-gxl-nfc 8, 16, 24, 30, 40, 50, 60
  60             meson-axg-nfc 8
  61
  62       nand-rb:
  63         maxItems: 1
  64         items:
  65           maximum: 0
  66
  67     unevaluatedProperties: false
  68
  69     dependencies:
  70       nand-ecc-strength: [nand-ecc-step-size]
  71       nand-ecc-step-size: [nand-ecc-strength]
  72
  73
  74 required:
  75   - compatible
  76   - reg
  77   - interrupts
  78   - clocks
  79   - clock-names
  80
  81 unevaluatedProperties: false
  82
  83 examples:
  84   - |
  85     #include <dt-bindings/clock/axg-clkc.h>
  86     #include <dt-bindings/interrupt-controller/arm-gic.h>
  87     nand-controller@ffe07800 {
  88       compatible = "amlogic,meson-axg-nfc";
  89       reg = <0xffe07800 0x100>, <0xffe07000 0x800>;
  90       reg-names = "nfc", "emmc";
  91       interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
  92       clocks = <&clkc CLKID_SD_EMMC_C>,  <&clkc CLKID_FCLK_DIV2>;
  93       clock-names = "core", "device";
  94
  95       pinctrl-0 = <&nand_pins>;
  96       pinctrl-names = "default";
  97
  98       #address-cells = <1>;
  99       #size-cells = <0>;
 100
 101       nand@0 {
 102         reg = <0>;
 103         nand-rb = <0>;
 104       };
 105     };
 106
 107 ...