xref: /linux/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml (revision 1ac731c529cd4d6adbce134754b51ff7d822b145) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mtd/qcom,nandc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm NAND controller
8
9maintainers:
10  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
11
12properties:
13  compatible:
14    enum:
15      - qcom,ipq806x-nand
16      - qcom,ipq4019-nand
17      - qcom,ipq6018-nand
18      - qcom,ipq8074-nand
19      - qcom,sdx55-nand
20
21  reg:
22    maxItems: 1
23
24  clocks:
25    items:
26      - description: Core Clock
27      - description: Always ON Clock
28
29  clock-names:
30    items:
31      - const: core
32      - const: aon
33
34patternProperties:
35  "^nand@[a-f0-9]$":
36    type: object
37    properties:
38      nand-bus-width:
39        const: 8
40
41      nand-ecc-strength:
42        enum: [1, 4, 8]
43
44      nand-ecc-step-size:
45        enum:
46          - 512
47
48allOf:
49  - $ref: nand-controller.yaml#
50
51  - if:
52      properties:
53        compatible:
54          contains:
55            const: qcom,ipq806x-nand
56    then:
57      properties:
58        dmas:
59          items:
60            - description: rxtx DMA channel
61
62        dma-names:
63          items:
64            - const: rxtx
65
66        qcom,cmd-crci:
67          $ref: /schemas/types.yaml#/definitions/uint32
68          description:
69            Must contain the ADM command type CRCI block instance number
70            specified for the NAND controller on the given platform
71
72        qcom,data-crci:
73          $ref: /schemas/types.yaml#/definitions/uint32
74          description:
75            Must contain the ADM data type CRCI block instance number
76            specified for the NAND controller on the given platform
77
78  - if:
79      properties:
80        compatible:
81          contains:
82            enum:
83              - qcom,ipq4019-nand
84              - qcom,ipq6018-nand
85              - qcom,ipq8074-nand
86              - qcom,sdx55-nand
87
88    then:
89      properties:
90        dmas:
91          items:
92            - description: tx DMA channel
93            - description: rx DMA channel
94            - description: cmd DMA channel
95
96        dma-names:
97          items:
98            - const: tx
99            - const: rx
100            - const: cmd
101
102  - if:
103      properties:
104        compatible:
105          contains:
106            enum:
107              - qcom,ipq806x-nand
108
109    then:
110      properties:
111        qcom,boot-partitions:
112          $ref: /schemas/types.yaml#/definitions/uint32-matrix
113          items:
114            items:
115              - description: offset
116              - description: size
117          description:
118            Boot partition use a different layout where the 4 bytes of spare
119            data are not protected by ECC. Use this to declare these special
120            partitions by defining first the offset and then the size.
121
122            It's in the form of <offset1 size1 offset2 size2 offset3 ...>
123            and should be declared in ascending order.
124
125            Refer to the ipq8064 example on how to use this special binding.
126
127required:
128  - compatible
129  - reg
130  - clocks
131  - clock-names
132
133unevaluatedProperties: false
134
135examples:
136  - |
137    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
138    nand-controller@1ac00000 {
139        compatible = "qcom,ipq806x-nand";
140        reg = <0x1ac00000 0x800>;
141
142        clocks = <&gcc EBI2_CLK>,
143                 <&gcc EBI2_AON_CLK>;
144        clock-names = "core", "aon";
145
146        dmas = <&adm_dma 3>;
147        dma-names = "rxtx";
148        qcom,cmd-crci = <15>;
149        qcom,data-crci = <3>;
150
151        #address-cells = <1>;
152        #size-cells = <0>;
153
154        nand@0 {
155            reg = <0>;
156
157            nand-ecc-strength = <4>;
158            nand-bus-width = <8>;
159
160            qcom,boot-partitions = <0x0 0x58a0000>;
161
162            partitions {
163                compatible = "fixed-partitions";
164                #address-cells = <1>;
165                #size-cells = <1>;
166
167                partition@0 {
168                    label = "boot-nand";
169                    reg = <0 0x58a0000>;
170                };
171
172                partition@58a0000 {
173                    label = "fs-nand";
174                    reg = <0x58a0000 0x4000000>;
175                };
176            };
177        };
178    };
179
180    #include <dt-bindings/clock/qcom,gcc-ipq4019.h>
181    nand-controller@79b0000 {
182        compatible = "qcom,ipq4019-nand";
183        reg = <0x79b0000 0x1000>;
184
185        clocks = <&gcc GCC_QPIC_CLK>,
186                 <&gcc GCC_QPIC_AHB_CLK>;
187        clock-names = "core", "aon";
188
189        dmas = <&qpicbam 0>,
190               <&qpicbam 1>,
191               <&qpicbam 2>;
192        dma-names = "tx", "rx", "cmd";
193
194        #address-cells = <1>;
195        #size-cells = <0>;
196
197        nand@0 {
198            reg = <0>;
199            nand-ecc-strength = <4>;
200            nand-bus-width = <8>;
201
202            partitions {
203                compatible = "fixed-partitions";
204                #address-cells = <1>;
205                #size-cells = <1>;
206
207                partition@0 {
208                    label = "boot-nand";
209                    reg = <0 0x58a0000>;
210                };
211
212                partition@58a0000 {
213                    label = "fs-nand";
214                    reg = <0x58a0000 0x4000000>;
215                };
216            };
217        };
218    };
219
220...
221