xref: /linux/Documentation/devicetree/bindings/mtd/ingenic,nand.yaml (revision 69bfec7548f4c1595bac0e3ddfc0458a5af31f4c) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mtd/ingenic,nand.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ingenic SoCs NAND controller
8
9maintainers:
10  - Paul Cercueil <paul@crapouillou.net>
11
12allOf:
13  - $ref: nand-controller.yaml#
14  - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml#
15
16properties:
17  compatible:
18    enum:
19      - ingenic,jz4740-nand
20      - ingenic,jz4725b-nand
21      - ingenic,jz4780-nand
22
23  reg:
24    items:
25      - description: Bank number, offset and size of first attached NAND chip
26      - description: Bank number, offset and size of second attached NAND chip
27      - description: Bank number, offset and size of third attached NAND chip
28      - description: Bank number, offset and size of fourth attached NAND chip
29    minItems: 1
30
31  ecc-engine: true
32
33  partitions:
34    type: object
35    deprecated: true
36    description:
37      Node containing description of fixed partitions.
38
39patternProperties:
40  "^nand@[a-f0-9]$":
41    type: object
42    properties:
43      rb-gpios:
44        description: GPIO specifier for the busy pin.
45        maxItems: 1
46
47      wp-gpios:
48        description: GPIO specifier for the write-protect pin.
49        maxItems: 1
50
51required:
52  - compatible
53  - reg
54
55unevaluatedProperties: false
56
57examples:
58  - |
59    #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
60    memory-controller@13410000 {
61        compatible = "ingenic,jz4780-nemc";
62        reg = <0x13410000 0x10000>;
63        #address-cells = <2>;
64        #size-cells = <1>;
65        ranges = <1 0 0x1b000000 0x1000000>,
66                 <2 0 0x1a000000 0x1000000>,
67                 <3 0 0x19000000 0x1000000>,
68                 <4 0 0x18000000 0x1000000>,
69                 <5 0 0x17000000 0x1000000>,
70                 <6 0 0x16000000 0x1000000>;
71
72        clocks = <&cgu JZ4780_CLK_NEMC>;
73
74        nand-controller@1 {
75            compatible = "ingenic,jz4780-nand";
76            reg = <1 0 0x1000000>;
77
78            #address-cells = <1>;
79            #size-cells = <0>;
80
81            ecc-engine = <&bch>;
82
83            ingenic,nemc-tAS = <10>;
84            ingenic,nemc-tAH = <5>;
85            ingenic,nemc-tBP = <10>;
86            ingenic,nemc-tAW = <15>;
87            ingenic,nemc-tSTRV = <100>;
88
89            pinctrl-names = "default";
90            pinctrl-0 = <&pins_nemc>;
91
92            nand@1 {
93                reg = <1>;
94
95                nand-ecc-step-size = <1024>;
96                nand-ecc-strength = <24>;
97                nand-ecc-mode = "hw";
98                nand-on-flash-bbt;
99
100                pinctrl-names = "default";
101                pinctrl-0 = <&pins_nemc_cs1>;
102
103                partitions {
104                    compatible = "fixed-partitions";
105                    #address-cells = <2>;
106                    #size-cells = <2>;
107
108                    partition@0 {
109                        label = "u-boot-spl";
110                        reg = <0x0 0x0 0x0 0x800000>;
111                    };
112
113                    partition@800000 {
114                        label = "u-boot";
115                        reg = <0x0 0x800000 0x0 0x200000>;
116                    };
117
118                    partition@a00000 {
119                        label = "u-boot-env";
120                        reg = <0x0 0xa00000 0x0 0x200000>;
121                    };
122
123                    partition@c00000 {
124                        label = "boot";
125                        reg = <0x0 0xc00000 0x0 0x4000000>;
126                    };
127
128                    partition@4c00000 {
129                        label = "system";
130                        reg = <0x0 0x4c00000 0x1 0xfb400000>;
131                    };
132                };
133            };
134        };
135    };
136