xref: /linux/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/cdns,qspi-nor.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Cadence Quad SPI controller
8
9maintainers:
10  - Vaishnav Achath <vaishnav.a@ti.com>
11
12allOf:
13  - $ref: spi-controller.yaml#
14  - if:
15      properties:
16        compatible:
17          contains:
18            const: xlnx,versal-ospi-1.0
19    then:
20      required:
21        - power-domains
22  - if:
23      properties:
24        compatible:
25          contains:
26            const: starfive,jh7110-qspi
27    then:
28      properties:
29        resets:
30          minItems: 2
31          maxItems: 3
32
33        reset-names:
34          minItems: 2
35          maxItems: 3
36          items:
37            enum: [ qspi, qspi-ocp, rstc_ref ]
38
39    else:
40      properties:
41        resets:
42          maxItems: 2
43
44        reset-names:
45          minItems: 1
46          maxItems: 2
47          items:
48            enum: [ qspi, qspi-ocp ]
49  - if:
50      properties:
51        compatible:
52          contains:
53            const: amd,pensando-elba-qspi
54    then:
55      properties:
56        cdns,fifo-depth:
57          enum: [ 128, 256, 1024 ]
58          default: 1024
59    else:
60      properties:
61        cdns,fifo-depth:
62          enum: [ 128, 256 ]
63          default: 128
64
65properties:
66  compatible:
67    oneOf:
68      - items:
69          - enum:
70              - amd,pensando-elba-qspi
71              - ti,k2g-qspi
72              - ti,am654-ospi
73              - intel,lgm-qspi
74              - xlnx,versal-ospi-1.0
75              - intel,socfpga-qspi
76              - starfive,jh7110-qspi
77          - const: cdns,qspi-nor
78      - const: cdns,qspi-nor
79
80  reg:
81    items:
82      - description: the controller register set
83      - description: the controller data area
84
85  interrupts:
86    maxItems: 1
87
88  clocks:
89    minItems: 1
90    maxItems: 3
91
92  clock-names:
93    oneOf:
94      - items:
95          - const: ref
96      - items:
97          - const: ref
98          - const: ahb
99          - const: apb
100
101  cdns,fifo-depth:
102    description:
103      Size of the data FIFO in words.
104    $ref: /schemas/types.yaml#/definitions/uint32
105
106  cdns,fifo-width:
107    $ref: /schemas/types.yaml#/definitions/uint32
108    description:
109      Bus width of the data FIFO in bytes.
110    default: 4
111
112  cdns,trigger-address:
113    $ref: /schemas/types.yaml#/definitions/uint32
114    description:
115      32-bit indirect AHB trigger address.
116
117  cdns,is-decoded-cs:
118    type: boolean
119    description:
120      Flag to indicate whether decoder is used to select different chip select
121      for different memory regions.
122
123  cdns,rclk-en:
124    type: boolean
125    description:
126      Flag to indicate that QSPI return clock is used to latch the read
127      data rather than the QSPI clock. Make sure that QSPI return clock
128      is populated on the board before using this property.
129
130  power-domains:
131    maxItems: 1
132
133  resets:
134    minItems: 2
135    maxItems: 3
136
137  reset-names:
138    minItems: 2
139    maxItems: 3
140    items:
141      enum: [ qspi, qspi-ocp, rstc_ref ]
142
143required:
144  - compatible
145  - reg
146  - interrupts
147  - clocks
148  - cdns,fifo-depth
149  - cdns,fifo-width
150  - cdns,trigger-address
151  - '#address-cells'
152  - '#size-cells'
153
154unevaluatedProperties: false
155
156examples:
157  - |
158    qspi: spi@ff705000 {
159        compatible = "cdns,qspi-nor";
160        #address-cells = <1>;
161        #size-cells = <0>;
162        reg = <0xff705000 0x1000>,
163              <0xffa00000 0x1000>;
164        interrupts = <0 151 4>;
165        clocks = <&qspi_clk>;
166        cdns,fifo-depth = <128>;
167        cdns,fifo-width = <4>;
168        cdns,trigger-address = <0x00000000>;
169        resets = <&rst 0x1>, <&rst 0x2>;
170        reset-names = "qspi", "qspi-ocp";
171
172        flash@0 {
173            compatible = "jedec,spi-nor";
174            reg = <0x0>;
175        };
176    };
177