xref: /linux/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml (revision 69bfec7548f4c1595bac0e3ddfc0458a5af31f4c) 
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
7title: STMicroelectronics Flexible Memory Controller 2 (FMC2)
8
9maintainers:
10  - Christophe Kerello <christophe.kerello@foss.st.com>
11
12properties:
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
37patternProperties:
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
47allOf:
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
92required:
93  - compatible
94  - reg
95  - interrupts
96
97unevaluatedProperties: false
98
99examples:
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
105    nand-controller@58002000 {
106        compatible = "st,stm32mp15-fmc2";
107        reg = <0x58002000 0x1000>,
108              <0x80000000 0x1000>,
109              <0x88010000 0x1000>,
110              <0x88020000 0x1000>,
111              <0x81000000 0x1000>,
112              <0x89010000 0x1000>,
113              <0x89020000 0x1000>;
114        interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
115        dmas = <&mdma1 20 0x2 0x12000a02 0x0 0x0>,
116               <&mdma1 20 0x2 0x12000a08 0x0 0x0>,
117               <&mdma1 21 0x2 0x12000a0a 0x0 0x0>;
118        dma-names = "tx", "rx", "ecc";
119        clocks = <&rcc FMC_K>;
120        resets = <&rcc FMC_R>;
121        #address-cells = <1>;
122        #size-cells = <0>;
123
124        nand@0 {
125            reg = <0>;
126            nand-on-flash-bbt;
127            #address-cells = <1>;
128            #size-cells = <1>;
129        };
130    };
131
132...
133