1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Ingenic SoCs NAND controller
8
9 maintainers:
10 - Paul Cercueil <paul@crapouillou.net>
11
12 allOf:
13 - $ref: nand-controller.yaml#
14 - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml#
15
16 properties:
17 compatible:
18 enum:
19 - ingenic,jz4740-nand
20 - ingenic,jz4725b-nand
21 - ingenic,jz4780-nand
22
23 reg:
24 items:
25 - description: Bank number, offset and size of first attached NAND chip
26 - description: Bank number, offset and size of second attached NAND chip
27 - description: Bank number, offset and size of third attached NAND chip
28 - description: Bank number, offset and size of fourth attached NAND chip
29 minItems: 1
30
31 ecc-engine: true
32
33 partitions:
34 type: object
35 deprecated: true
36 description:
37 Node containing description of fixed partitions.
38
39 patternProperties:
40 "^nand@[a-f0-9]$":
41 type: object
42 $ref: raw-nand-chip.yaml
43 properties:
44
45 rb-gpios:
46 description: GPIO specifier for the busy pin.
47 maxItems: 1
48
49 wp-gpios:
50 description: GPIO specifier for the write-protect pin.
51 maxItems: 1
52
53 unevaluatedProperties: false
54
55 required:
56 - compatible
57 - reg
58
59 unevaluatedProperties: false
60
61 examples:
62 - |
63 #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
64 memory-controller@13410000 {
65 compatible = "ingenic,jz4780-nemc";
66 reg = <0x13410000 0x10000>;
67 #address-cells = <2>;
68 #size-cells = <1>;
69 ranges = <1 0 0x1b000000 0x1000000>,
70 <2 0 0x1a000000 0x1000000>,
71 <3 0 0x19000000 0x1000000>,
72 <4 0 0x18000000 0x1000000>,
73 <5 0 0x17000000 0x1000000>,
74 <6 0 0x16000000 0x1000000>;
75
76 clocks = <&cgu JZ4780_CLK_NEMC>;
77
78 nand-controller@1 {
79 compatible = "ingenic,jz4780-nand";
80 reg = <1 0 0x1000000>;
81
82 #address-cells = <1>;
83 #size-cells = <0>;
84
85 ecc-engine = <&bch>;
86
87 ingenic,nemc-tAS = <10>;
88 ingenic,nemc-tAH = <5>;
89 ingenic,nemc-tBP = <10>;
90 ingenic,nemc-tAW = <15>;
91 ingenic,nemc-tSTRV = <100>;
92
93 pinctrl-names = "default";
94 pinctrl-0 = <&pins_nemc>;
95
96 nand@1 {
97 reg = <1>;
98
99 nand-ecc-step-size = <1024>;
100 nand-ecc-strength = <24>;
101 nand-ecc-mode = "hw";
102 nand-on-flash-bbt;
103
104 pinctrl-names = "default";
105 pinctrl-0 = <&pins_nemc_cs1>;
106
107 partitions {
108 compatible = "fixed-partitions";
109 #address-cells = <2>;
110 #size-cells = <2>;
111
112 partition@0 {
113 label = "u-boot-spl";
114 reg = <0x0 0x0 0x0 0x800000>;
115 };
116
117 partition@800000 {
118 label = "u-boot";
119 reg = <0x0 0x800000 0x0 0x200000>;
120 };
121
122 partition@a00000 {
123 label = "u-boot-env";
124 reg = <0x0 0xa00000 0x0 0x200000>;
125 };
126
127 partition@c00000 {
128 label = "boot";
129 reg = <0x0 0xc00000 0x0 0x4000000>;
130 };
131
132 partition@4c00000 {
133 label = "system";
134 reg = <0x0 0x4c00000 0x1 0xfb400000>;
135 };
136 };
137 };
138 };
139 };
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