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$id: http://devicetree.org/schemas/memory-controllers/ingenic,nemc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ingenic SoCs NAND / External Memory Controller (NEMC) devicetree bindings
8
9maintainers:
10 - Paul Cercueil <paul@crapouillou.net>
11
12properties:
13 $nodename:
14 pattern: "^memory-controller@[0-9a-f]+$"
15
16 compatible:
17 oneOf:
18 - enum:
19 - ingenic,jz4740-nemc
20 - ingenic,jz4780-nemc
21 - items:
22 - const: ingenic,jz4725b-nemc
23 - const: ingenic,jz4740-nemc
24
25 "#address-cells":
26 const: 2
27
28 "#size-cells":
29 const: 1
30
31 ranges: true
32
33 reg:
34 maxItems: 1
35
36 clocks:
37 maxItems: 1
38
39patternProperties:
40 ".*@[0-9]+$":
41 type: object
42 properties:
43 reg:
44 minItems: 1
45 maxItems: 255
46
47 ingenic,nemc-bus-width:
48 $ref: /schemas/types.yaml#/definitions/uint32
49 enum: [8, 16]
50 description: Specifies the bus width in bits.
51
52 ingenic,nemc-tAS:
53 $ref: /schemas/types.yaml#/definitions/uint32
54 description: Address setup time in nanoseconds.
55
56 ingenic,nemc-tAH:
57 $ref: /schemas/types.yaml#/definitions/uint32
58 description: Address hold time in nanoseconds.
59
60 ingenic,nemc-tBP:
61 $ref: /schemas/types.yaml#/definitions/uint32
62 description: Burst pitch time in nanoseconds.
63
64 ingenic,nemc-tAW:
65 $ref: /schemas/types.yaml#/definitions/uint32
66 description: Address wait time in nanoseconds.
67
68 ingenic,nemc-tSTRV:
69 $ref: /schemas/types.yaml#/definitions/uint32
70 description: Static memory recovery time in nanoseconds.
71
72 required:
73 - reg
74
75required:
76 - compatible
77 - "#address-cells"
78 - "#size-cells"
79 - ranges
80 - reg
81 - clocks
82
83additionalProperties: false
84
85examples:
86 - |
87 #include <dt-bindings/clock/jz4780-cgu.h>
88 #include <dt-bindings/gpio/gpio.h>
89 nemc: memory-controller@13410000 {
90 compatible = "ingenic,jz4780-nemc";
91 reg = <0x13410000 0x10000>;
92 #address-cells = <2>;
93 #size-cells = <1>;
94 ranges = <1 0 0x1b000000 0x1000000>,
95 <2 0 0x1a000000 0x1000000>,
96 <3 0 0x19000000 0x1000000>,
97 <4 0 0x18000000 0x1000000>,
98 <5 0 0x17000000 0x1000000>,
99 <6 0 0x16000000 0x1000000>;
100
101 clocks = <&cgu JZ4780_CLK_NEMC>;
102
103 ethernet@6 {
104 compatible = "davicom,dm9000";
105 davicom,no-eeprom;
106
107 pinctrl-names = "default";
108 pinctrl-0 = <&pins_nemc_cs6>;
109
110 reg = <6 0 1>, /* addr */
111 <6 2 1>; /* data */
112
113 ingenic,nemc-tAS = <15>;
114 ingenic,nemc-tAH = <10>;
115 ingenic,nemc-tBP = <20>;
116 ingenic,nemc-tAW = <50>;
117 ingenic,nemc-tSTRV = <100>;
118
119 reset-gpios = <&gpf 12 GPIO_ACTIVE_HIGH>;
120 vcc-supply = <ð0_power>;
121
122 interrupt-parent = <&gpe>;
123 interrupts = <19 4>;
124 };
125 };