st,stm32-fmc2-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/st,stm32-fmc2-nand.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: STMicroelectronics Flexible Memory Controller 2 (FMC2) Bindings
    8 
    9 maintainers:
   10   - Christophe Kerello <christophe.kerello@foss.st.com>
   11 
   12 properties:
   13   compatible:
   14     enum:
   15       - st,stm32mp15-fmc2
   16       - st,stm32mp1-fmc2-nfc
   17 
   18   reg:
   19     minItems: 6
   20     maxItems: 7
   21 
   22   interrupts:
   23     maxItems: 1
   24 
   25   dmas:
   26     items:
   27       - description: tx DMA channel
   28       - description: rx DMA channel
   29       - description: ecc DMA channel
   30 
   31   dma-names:
   32     items:
   33       - const: tx
   34       - const: rx
   35       - const: ecc
   36 
   37 patternProperties:
   38   "^nand@[a-f0-9]$":
   39     type: object
   40     properties:
   41       nand-ecc-step-size:
   42         const: 512
   43 
   44       nand-ecc-strength:
   45         enum: [1, 4, 8]
   46 
   47 allOf:
   48   - $ref: "nand-controller.yaml#"
   49 
   50   - if:
   51       properties:
   52         compatible:
   53           contains:
   54             const: st,stm32mp15-fmc2
   55     then:
   56       properties:
   57         reg:
   58           items:
   59             - description: Registers
   60             - description: Chip select 0 data
   61             - description: Chip select 0 command
   62             - description: Chip select 0 address space
   63             - description: Chip select 1 data
   64             - description: Chip select 1 command
   65             - description: Chip select 1 address space
   66 
   67         clocks:
   68           maxItems: 1
   69 
   70         resets:
   71           maxItems: 1
   72 
   73       required:
   74         - clocks
   75 
   76   - if:
   77       properties:
   78         compatible:
   79           contains:
   80             const: st,stm32mp1-fmc2-nfc
   81     then:
   82       properties:
   83         reg:
   84           items:
   85             - description: Chip select 0 data
   86             - description: Chip select 0 command
   87             - description: Chip select 0 address space
   88             - description: Chip select 1 data
   89             - description: Chip select 1 command
   90             - description: Chip select 1 address space
   91 
   92 required:
   93   - compatible
   94   - reg
   95   - interrupts
   96 
   97 unevaluatedProperties: false
   98 
   99 examples:
  100   - |
  101     #include <dt-bindings/interrupt-controller/arm-gic.h>
  102     #include <dt-bindings/clock/stm32mp1-clks.h>
  103     #include <dt-bindings/reset/stm32mp1-resets.h>
  104     nand-controller@58002000 {
  105       compatible = "st,stm32mp15-fmc2";
  106       reg = <0x58002000 0x1000>,
  107             <0x80000000 0x1000>,
  108             <0x88010000 0x1000>,
  109             <0x88020000 0x1000>,
  110             <0x81000000 0x1000>,
  111             <0x89010000 0x1000>,
  112             <0x89020000 0x1000>;
  113       interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
  114       dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>,
  115              <&mdma1 20 0x2 0x12000a08 0x0 0x0>,
  116              <&mdma1 21 0x2 0x12000a0a 0x0 0x0>;
  117       dma-names = "tx", "rx", "ecc";
  118       clocks = <&rcc FMC_K>;
  119       resets = <&rcc FMC_R>;
  120       #address-cells = <1>;
  121       #size-cells = <0>;
  122 
  123       nand@0 {
  124         reg = <0>;
  125         nand-on-flash-bbt;
  126         #address-cells = <1>;
  127         #size-cells = <1>;
  128       };
  129     };
  130 
  131 ...

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sys/contrib/device-tree/Bindings/mtd/st,stm32-fmc2-nand.yaml