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