xref: /linux/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml (revision 9557b4376d02088a33e5f4116bcc324d35a3b64c) 
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
34  qcom,cmd-crci:
35    $ref: /schemas/types.yaml#/definitions/uint32
36    description:
37      Must contain the ADM command type CRCI block instance number specified for
38      the NAND controller on the given platform
39
40  qcom,data-crci:
41    $ref: /schemas/types.yaml#/definitions/uint32
42    description:
43      Must contain the ADM data type CRCI block instance number specified for
44      the NAND controller on the given platform
45
46patternProperties:
47  "^nand@[a-f0-9]$":
48    type: object
49    $ref: raw-nand-chip.yaml
50    properties:
51
52      nand-bus-width:
53        const: 8
54
55      nand-ecc-strength:
56        enum: [1, 4, 8]
57
58      nand-ecc-step-size:
59        enum:
60          - 512
61
62      qcom,boot-partitions:
63        $ref: /schemas/types.yaml#/definitions/uint32-matrix
64        items:
65          items:
66            - description: offset
67            - description: size
68        description:
69          Boot partition use a different layout where the 4 bytes of spare
70          data are not protected by ECC. Use this to declare these special
71          partitions by defining first the offset and then the size.
72
73          It's in the form of <offset1 size1 offset2 size2 offset3 ...>
74          and should be declared in ascending order.
75
76          Refer to the ipq8064 example on how to use this special binding.
77
78    unevaluatedProperties: false
79
80allOf:
81  - $ref: nand-controller.yaml#
82
83  - if:
84      properties:
85        compatible:
86          contains:
87            const: qcom,ipq806x-nand
88    then:
89      properties:
90        dmas:
91          items:
92            - description: rxtx DMA channel
93
94        dma-names:
95          items:
96            - const: rxtx
97
98  - if:
99      properties:
100        compatible:
101          contains:
102            enum:
103              - qcom,ipq4019-nand
104              - qcom,ipq6018-nand
105              - qcom,ipq8074-nand
106              - qcom,sdx55-nand
107
108    then:
109      properties:
110        dmas:
111          items:
112            - description: tx DMA channel
113            - description: rx DMA channel
114            - description: cmd DMA channel
115
116        dma-names:
117          items:
118            - const: tx
119            - const: rx
120            - const: cmd
121
122        qcom,cmd-crci: false
123        qcom,data-crci: false
124
125      patternProperties:
126        "^nand@[a-f0-9]$":
127          properties:
128            qcom,boot-partitions: false
129
130required:
131  - compatible
132  - reg
133  - clocks
134  - clock-names
135
136unevaluatedProperties: false
137
138examples:
139  - |
140    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
141    nand-controller@1ac00000 {
142        compatible = "qcom,ipq806x-nand";
143        reg = <0x1ac00000 0x800>;
144
145        clocks = <&gcc EBI2_CLK>,
146                 <&gcc EBI2_AON_CLK>;
147        clock-names = "core", "aon";
148
149        dmas = <&adm_dma 3>;
150        dma-names = "rxtx";
151        qcom,cmd-crci = <15>;
152        qcom,data-crci = <3>;
153
154        #address-cells = <1>;
155        #size-cells = <0>;
156
157        nand@0 {
158            reg = <0>;
159
160            nand-ecc-strength = <4>;
161            nand-bus-width = <8>;
162
163            qcom,boot-partitions = <0x0 0x58a0000>;
164
165            partitions {
166                compatible = "fixed-partitions";
167                #address-cells = <1>;
168                #size-cells = <1>;
169
170                partition@0 {
171                    label = "boot-nand";
172                    reg = <0 0x58a0000>;
173                };
174
175                partition@58a0000 {
176                    label = "fs-nand";
177                    reg = <0x58a0000 0x4000000>;
178                };
179            };
180        };
181    };
182
183    #include <dt-bindings/clock/qcom,gcc-ipq4019.h>
184    nand-controller@79b0000 {
185        compatible = "qcom,ipq4019-nand";
186        reg = <0x79b0000 0x1000>;
187
188        clocks = <&gcc GCC_QPIC_CLK>,
189                 <&gcc GCC_QPIC_AHB_CLK>;
190        clock-names = "core", "aon";
191
192        dmas = <&qpicbam 0>,
193               <&qpicbam 1>,
194               <&qpicbam 2>;
195        dma-names = "tx", "rx", "cmd";
196
197        #address-cells = <1>;
198        #size-cells = <0>;
199
200        nand@0 {
201            reg = <0>;
202            nand-ecc-strength = <4>;
203            nand-bus-width = <8>;
204
205            partitions {
206                compatible = "fixed-partitions";
207                #address-cells = <1>;
208                #size-cells = <1>;
209
210                partition@0 {
211                    label = "boot-nand";
212                    reg = <0 0x58a0000>;
213                };
214
215                partition@58a0000 {
216                    label = "fs-nand";
217                    reg = <0x58a0000 0x4000000>;
218                };
219            };
220        };
221    };
222
223...
224