summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml
blob: eab8ea3da1fa8e3a623198fac9cdd5bc4e32e860 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mtd/st,stm32-fmc2-nand.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: STMicroelectronics Flexible Memory Controller 2 (FMC2) Bindings

maintainers:
  - Christophe Kerello <christophe.kerello@foss.st.com>

properties:
  compatible:
    enum:
      - st,stm32mp15-fmc2
      - st,stm32mp1-fmc2-nfc

  reg:
    minItems: 6
    maxItems: 7

  interrupts:
    maxItems: 1

  dmas:
    items:
      - description: tx DMA channel
      - description: rx DMA channel
      - description: ecc DMA channel

  dma-names:
    items:
      - const: tx
      - const: rx
      - const: ecc

patternProperties:
  "^nand@[a-f0-9]$":
    type: object
    properties:
      nand-ecc-step-size:
        const: 512

      nand-ecc-strength:
        enum: [1, 4, 8]

allOf:
  - $ref: "nand-controller.yaml#"

  - if:
      properties:
        compatible:
          contains:
            const: st,stm32mp15-fmc2
    then:
      properties:
        reg:
          items:
            - description: Registers
            - description: Chip select 0 data
            - description: Chip select 0 command
            - description: Chip select 0 address space
            - description: Chip select 1 data
            - description: Chip select 1 command
            - description: Chip select 1 address space

        clocks:
          maxItems: 1

        resets:
          maxItems: 1

      required:
        - clocks

  - if:
      properties:
        compatible:
          contains:
            const: st,stm32mp1-fmc2-nfc
    then:
      properties:
        reg:
          items:
            - description: Chip select 0 data
            - description: Chip select 0 command
            - description: Chip select 0 address space
            - description: Chip select 1 data
            - description: Chip select 1 command
            - description: Chip select 1 address space

required:
  - compatible
  - reg
  - interrupts

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/stm32mp1-clks.h>
    #include <dt-bindings/reset/stm32mp1-resets.h>
    nand-controller@58002000 {
      compatible = "st,stm32mp15-fmc2";
      reg = <0x58002000 0x1000>,
            <0x80000000 0x1000>,
            <0x88010000 0x1000>,
            <0x88020000 0x1000>,
            <0x81000000 0x1000>,
            <0x89010000 0x1000>,
            <0x89020000 0x1000>;
      interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
      dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>,
             <&mdma1 20 0x2 0x12000a08 0x0 0x0>,
             <&mdma1 21 0x2 0x12000a0a 0x0 0x0>;
      dma-names = "tx", "rx", "ecc";
      clocks = <&rcc FMC_K>;
      resets = <&rcc FMC_R>;
      #address-cells = <1>;
      #size-cells = <0>;

      nand@0 {
        reg = <0>;
        nand-on-flash-bbt;
        #address-cells = <1>;
        #size-cells = <1>;
      };
    };

...