xref: /linux/Documentation/devicetree/bindings/mtd/mediatek,mtk-nfc.yaml (revision cdd5b5a9761fd66d17586e4f4ba6588c70e640ea) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mtd/mediatek,mtk-nfc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek(MTK) SoCs raw NAND FLASH controller (NFC)
8
9maintainers:
10  - Xiangsheng Hou <xiangsheng.hou@mediatek.com>
11
12properties:
13  compatible:
14    enum:
15      - mediatek,mt2701-nfc
16      - mediatek,mt2712-nfc
17      - mediatek,mt7622-nfc
18
19  reg:
20    items:
21      - description: Base physical address and size of NFI.
22
23  interrupts:
24    items:
25      - description: NFI interrupt
26
27  clocks:
28    items:
29      - description: clock used for the controller
30      - description: clock used for the pad
31
32  clock-names:
33    items:
34      - const: nfi_clk
35      - const: pad_clk
36
37  ecc-engine:
38    description: device-tree node of the required ECC engine.
39    $ref: /schemas/types.yaml#/definitions/phandle
40
41patternProperties:
42  "^nand@[a-f0-9]$":
43    $ref: raw-nand-chip.yaml#
44    unevaluatedProperties: false
45    properties:
46      reg:
47        maximum: 1
48      nand-ecc-mode:
49        const: hw
50
51allOf:
52  - $ref: nand-controller.yaml#
53
54  - if:
55      properties:
56        compatible:
57          contains:
58            const: mediatek,mt2701-nfc
59    then:
60      patternProperties:
61        "^nand@[a-f0-9]$":
62          properties:
63            nand-ecc-step-size:
64              enum: [ 512, 1024 ]
65            nand-ecc-strength:
66              enum: [4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, 32, 36,
67                     40, 44, 48, 52, 56, 60]
68
69  - if:
70      properties:
71        compatible:
72          contains:
73            const: mediatek,mt2712-nfc
74    then:
75      patternProperties:
76        "^nand@[a-f0-9]$":
77          properties:
78            nand-ecc-step-size:
79              enum: [ 512, 1024 ]
80            nand-ecc-strength:
81              enum: [4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, 32, 36,
82                     40, 44, 48, 52, 56, 60, 68, 72, 80]
83
84  - if:
85      properties:
86        compatible:
87          contains:
88            const: mediatek,mt7622-nfc
89    then:
90      patternProperties:
91        "^nand@[a-f0-9]$":
92          properties:
93            nand-ecc-step-size:
94              const: 512
95            nand-ecc-strength:
96              enum: [4, 6, 8, 10, 12]
97
98required:
99  - compatible
100  - reg
101  - interrupts
102  - clocks
103  - clock-names
104  - ecc-engine
105
106unevaluatedProperties: false
107
108examples:
109  - |
110    #include <dt-bindings/clock/mt2701-clk.h>
111    #include <dt-bindings/interrupt-controller/arm-gic.h>
112    #include <dt-bindings/interrupt-controller/irq.h>
113
114    soc {
115        #address-cells = <2>;
116        #size-cells = <2>;
117
118        nand-controller@1100d000 {
119            compatible = "mediatek,mt2701-nfc";
120            reg = <0 0x1100d000 0 0x1000>;
121            interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_LOW>;
122            clocks = <&pericfg CLK_PERI_NFI>,
123                     <&pericfg CLK_PERI_NFI_PAD>;
124            clock-names = "nfi_clk", "pad_clk";
125            ecc-engine = <&bch>;
126            #address-cells = <1>;
127            #size-cells = <0>;
128
129            nand@0 {
130                reg = <0>;
131
132                nand-on-flash-bbt;
133                nand-ecc-mode = "hw";
134                nand-ecc-step-size = <1024>;
135                nand-ecc-strength = <24>;
136
137                partitions {
138                    compatible = "fixed-partitions";
139                    #address-cells = <1>;
140                    #size-cells = <1>;
141
142                    preloader@0 {
143                        label = "pl";
144                        read-only;
145                        reg = <0x0 0x400000>;
146                    };
147                    android@400000 {
148                        label = "android";
149                        reg = <0x400000 0x12c00000>;
150                    };
151                };
152            };
153        };
154    };
155