1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mtd/denali,nand.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Denali NAND controller
8
9 maintainers:
10 - Masahiro Yamada <yamada.masahiro@socionext.com>
11
12 properties:
13 compatible:
14 enum:
15 - altr,socfpga-denali-nand
16 - socionext,uniphier-denali-nand-v5a
17 - socionext,uniphier-denali-nand-v5b
18
19 reg-names:
20 description: |
21 There are two register regions:
22 nand_data: host data/command interface
23 denali_reg: register interface
24 items:
25 - const: nand_data
26 - const: denali_reg
27
28 reg:
29 minItems: 2
30 maxItems: 2
31
32 interrupts:
33 maxItems: 1
34
35 clock-names:
36 description: |
37 There are three clocks:
38 nand: controller core clock
39 nand_x: bus interface clock
40 ecc: ECC circuit clock
41 items:
42 - const: nand
43 - const: nand_x
44 - const: ecc
45
46 clocks:
47 minItems: 3
48 maxItems: 3
49
50 reset-names:
51 description: |
52 There are two optional resets:
53 nand: controller core reset
54 reg: register reset
55 oneOf:
56 - items:
57 - const: nand
58 - const: reg
59 - const: nand
60 - const: reg
61
62 resets:
63 minItems: 1
64 maxItems: 2
65
66 patternProperties:
67 "^nand@[a-f0-9]$":
68 type: object
69 $ref: raw-nand-chip.yaml
70 unevaluatedProperties: false
71
72 allOf:
73 - $ref: nand-controller.yaml
74
75 - if:
76 properties:
77 compatible:
78 contains:
79 const: altr,socfpga-denali-nand
80 then:
81 patternProperties:
82 "^nand@[a-f0-9]$":
83 properties:
84 nand-ecc-strength:
85 enum:
86 - 8
87 - 15
88 nand-ecc-step-size:
89 enum:
90 - 512
91
92 - if:
93 properties:
94 compatible:
95 contains:
96 const: socionext,uniphier-denali-nand-v5a
97 then:
98 patternProperties:
99 "^nand@[a-f0-9]$":
100 properties:
101 nand-ecc-strength:
102 enum:
103 - 8
104 - 16
105 - 24
106 nand-ecc-step-size:
107 enum:
108 - 1024
109
110 - if:
111 properties:
112 compatible:
113 contains:
114 const: socionext,uniphier-denali-nand-v5b
115 then:
116 patternProperties:
117 "^nand@[a-f0-9]$":
118 properties:
119 nand-ecc-strength:
120 enum:
121 - 8
122 - 16
123 nand-ecc-step-size:
124 enum:
125 - 1024
126
127 required:
128 - compatible
129 - reg
130 - interrupts
131 - clock-names
132 - clocks
133
134 unevaluatedProperties: false
135
136 examples:
137 - |
138 nand-controller@ff900000 {
139 compatible = "altr,socfpga-denali-nand";
140 reg-names = "nand_data", "denali_reg";
141 reg = <0xff900000 0x20>, <0xffb80000 0x1000>;
142 interrupts = <0 144 4>;
143 clock-names = "nand", "nand_x", "ecc";
144 clocks = <&nand_clk>, <&nand_x_clk>, <&nand_ecc_clk>;
145 reset-names = "nand", "reg";
146 resets = <&nand_rst>, <&nand_reg_rst>;
147 #address-cells = <1>;
148 #size-cells = <0>;
149
150 nand@0 {
151 reg = <0>;
152 };
153 };
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