xref: /linux/Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml (revision d30c1683aaecb93d2ab95685dc4300a33d3cea7a) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/nvmem/rockchip,otp.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Rockchip internal OTP (One Time Programmable) memory
8
9maintainers:
10  - Heiko Stuebner <heiko@sntech.de>
11
12properties:
13  compatible:
14    enum:
15      - rockchip,px30-otp
16      - rockchip,rk3308-otp
17      - rockchip,rk3576-otp
18      - rockchip,rk3588-otp
19
20  reg:
21    maxItems: 1
22
23  clocks:
24    minItems: 3
25    maxItems: 4
26
27  clock-names:
28    minItems: 3
29    items:
30      - const: otp
31      - const: apb_pclk
32      - const: phy
33      - const: arb
34
35  resets:
36    minItems: 1
37    maxItems: 3
38
39  reset-names:
40    minItems: 1
41    maxItems: 3
42
43required:
44  - compatible
45  - reg
46  - clocks
47  - clock-names
48  - resets
49  - reset-names
50
51allOf:
52  - $ref: nvmem.yaml#
53  - $ref: nvmem-deprecated-cells.yaml#
54
55  - if:
56      properties:
57        compatible:
58          contains:
59            enum:
60              - rockchip,px30-otp
61              - rockchip,rk3308-otp
62    then:
63      properties:
64        clocks:
65          maxItems: 3
66        clock-names:
67          maxItems: 3
68        resets:
69          maxItems: 1
70        reset-names:
71          items:
72            - const: phy
73
74  - if:
75      properties:
76        compatible:
77          contains:
78            enum:
79              - rockchip,rk3576-otp
80    then:
81      properties:
82        clocks:
83          maxItems: 3
84        clock-names:
85          maxItems: 3
86        resets:
87          minItems: 2
88          maxItems: 2
89        reset-names:
90          items:
91            - const: otp
92            - const: apb
93
94  - if:
95      properties:
96        compatible:
97          contains:
98            enum:
99              - rockchip,rk3588-otp
100    then:
101      properties:
102        clocks:
103          minItems: 4
104        clock-names:
105          minItems: 4
106        resets:
107          minItems: 3
108        reset-names:
109          items:
110            - const: otp
111            - const: apb
112            - const: arb
113
114unevaluatedProperties: false
115
116examples:
117  - |
118    #include <dt-bindings/clock/px30-cru.h>
119
120    soc {
121        #address-cells = <2>;
122        #size-cells = <2>;
123
124        otp: efuse@ff290000 {
125            compatible = "rockchip,px30-otp";
126            reg = <0x0 0xff290000 0x0 0x4000>;
127            clocks = <&cru SCLK_OTP_USR>, <&cru PCLK_OTP_NS>,
128                     <&cru PCLK_OTP_PHY>;
129            clock-names = "otp", "apb_pclk", "phy";
130            resets = <&cru SRST_OTP_PHY>;
131            reset-names = "phy";
132            #address-cells = <1>;
133            #size-cells = <1>;
134
135            cpu_id: id@7 {
136                reg = <0x07 0x10>;
137            };
138
139            cpu_leakage: cpu-leakage@17 {
140                reg = <0x17 0x1>;
141            };
142
143            performance: performance@1e {
144                reg = <0x1e 0x1>;
145                bits = <4 3>;
146            };
147        };
148    };
149