1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/pwm/pwm-aml 4 $id: http://devicetree.org/schemas/pwm/pwm-amlogic.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Amlogic PWM 7 title: Amlogic PWM
8 8
9 maintainers: 9 maintainers:
10 - Heiner Kallweit <hkallweit1@gmail.com> 10 - Heiner Kallweit <hkallweit1@gmail.com>
11 11
12 properties: 12 properties:
13 compatible: 13 compatible:
14 oneOf: 14 oneOf:
15 - enum: 15 - enum:
16 - amlogic,meson8b-pwm 16 - amlogic,meson8b-pwm
17 - amlogic,meson-gxbb-pwm 17 - amlogic,meson-gxbb-pwm
18 - amlogic,meson-gxbb-ao-pwm 18 - amlogic,meson-gxbb-ao-pwm
19 - amlogic,meson-axg-ee-pwm 19 - amlogic,meson-axg-ee-pwm
20 - amlogic,meson-axg-ao-pwm 20 - amlogic,meson-axg-ao-pwm
21 - amlogic,meson-g12a-ee-pwm 21 - amlogic,meson-g12a-ee-pwm
22 - amlogic,meson-g12a-ao-pwm-ab 22 - amlogic,meson-g12a-ao-pwm-ab
23 - amlogic,meson-g12a-ao-pwm-cd 23 - amlogic,meson-g12a-ao-pwm-cd
24 deprecated: true 24 deprecated: true
25 - items: 25 - items:
26 - const: amlogic,meson-gx-pwm 26 - const: amlogic,meson-gx-pwm
27 - const: amlogic,meson-gxbb-pwm 27 - const: amlogic,meson-gxbb-pwm
28 deprecated: true 28 deprecated: true
29 - items: 29 - items:
30 - const: amlogic,meson-gx-ao-pwm 30 - const: amlogic,meson-gx-ao-pwm
31 - const: amlogic,meson-gxbb-ao-pwm 31 - const: amlogic,meson-gxbb-ao-pwm
32 deprecated: true 32 deprecated: true
33 - items: 33 - items:
34 - const: amlogic,meson8-pwm 34 - const: amlogic,meson8-pwm
35 - const: amlogic,meson8b-pwm 35 - const: amlogic,meson8b-pwm
36 deprecated: true 36 deprecated: true
37 - enum: 37 - enum:
38 - amlogic,meson8-pwm-v2 38 - amlogic,meson8-pwm-v2
39 - amlogic,meson-s4-pwm 39 - amlogic,meson-s4-pwm
40 - items: 40 - items:
41 - enum: 41 - enum:
42 - amlogic,meson-a1-pwm 42 - amlogic,meson-a1-pwm
43 - const: amlogic,meson-s4-pwm 43 - const: amlogic,meson-s4-pwm
44 - items: 44 - items:
45 - enum: 45 - enum:
46 - amlogic,meson8b-pwm-v2 46 - amlogic,meson8b-pwm-v2
47 - amlogic,meson-gxbb-pwm-v2 47 - amlogic,meson-gxbb-pwm-v2
48 - amlogic,meson-axg-pwm-v2 48 - amlogic,meson-axg-pwm-v2
49 - amlogic,meson-g12-pwm-v2 49 - amlogic,meson-g12-pwm-v2
50 - const: amlogic,meson8-pwm-v2 50 - const: amlogic,meson8-pwm-v2
51 51
52 reg: 52 reg:
53 maxItems: 1 53 maxItems: 1
54 54
55 clocks: 55 clocks:
56 minItems: 1 56 minItems: 1
57 maxItems: 4 57 maxItems: 4
58 58
59 clock-names: 59 clock-names:
60 minItems: 1 60 minItems: 1
61 maxItems: 2 61 maxItems: 2
62 62
63 power-domains: 63 power-domains:
64 maxItems: 1 64 maxItems: 1
65 65
66 "#pwm-cells": 66 "#pwm-cells":
67 const: 3 67 const: 3
68 68
69 required: 69 required:
70 - compatible 70 - compatible
71 - reg 71 - reg
72 72
73 allOf: 73 allOf:
74 - $ref: pwm.yaml# 74 - $ref: pwm.yaml#
75 75
76 - if: 76 - if:
77 properties: 77 properties:
78 compatible: 78 compatible:
79 contains: 79 contains:
80 enum: 80 enum:
81 - amlogic,meson8-pwm 81 - amlogic,meson8-pwm
82 - amlogic,meson8b-pwm 82 - amlogic,meson8b-pwm
83 - amlogic,meson-gxbb-pwm 83 - amlogic,meson-gxbb-pwm
84 - amlogic,meson-gxbb-ao-pwm 84 - amlogic,meson-gxbb-ao-pwm
85 - amlogic,meson-axg-ee-pwm 85 - amlogic,meson-axg-ee-pwm
86 - amlogic,meson-axg-ao-pwm 86 - amlogic,meson-axg-ao-pwm
87 - amlogic,meson-g12a-ee-pwm 87 - amlogic,meson-g12a-ee-pwm
88 - amlogic,meson-g12a-ao-pwm-ab 88 - amlogic,meson-g12a-ao-pwm-ab
89 - amlogic,meson-g12a-ao-pwm-cd 89 - amlogic,meson-g12a-ao-pwm-cd
90 then: 90 then:
91 # Obsolete historic bindings tied to the 91 # Obsolete historic bindings tied to the driver implementation
92 # The clocks provided here are meant to 92 # The clocks provided here are meant to be matched with the input
93 # known (hard-coded) in the driver and u 93 # known (hard-coded) in the driver and used to select pwm clock
94 # source. Currently, the linux driver ig 94 # source. Currently, the linux driver ignores this.
95 # This is kept to maintain ABI backward 95 # This is kept to maintain ABI backward compatibility.
96 properties: 96 properties:
97 clocks: 97 clocks:
98 maxItems: 2 98 maxItems: 2
99 clock-names: 99 clock-names:
100 oneOf: 100 oneOf:
101 - items: 101 - items:
102 - enum: [clkin0, clkin1] 102 - enum: [clkin0, clkin1]
103 - items: 103 - items:
104 - const: clkin0 104 - const: clkin0
105 - const: clkin1 105 - const: clkin1
106 106
107 # Newer binding where clock describe the act 107 # Newer binding where clock describe the actual clock inputs of the pwm
108 # block. These are necessary but some inputs 108 # block. These are necessary but some inputs may be grounded.
109 - if: 109 - if:
110 properties: 110 properties:
111 compatible: 111 compatible:
112 contains: 112 contains:
113 enum: 113 enum:
114 - amlogic,meson8-pwm-v2 114 - amlogic,meson8-pwm-v2
115 then: 115 then:
116 properties: 116 properties:
117 clocks: 117 clocks:
118 minItems: 1 118 minItems: 1
119 items: 119 items:
120 - description: input clock 0 of th 120 - description: input clock 0 of the pwm block
121 - description: input clock 1 of th 121 - description: input clock 1 of the pwm block
122 - description: input clock 2 of th 122 - description: input clock 2 of the pwm block
123 - description: input clock 3 of th 123 - description: input clock 3 of the pwm block
124 clock-names: false 124 clock-names: false
125 required: 125 required:
126 - clocks 126 - clocks
127 127
128 # Newer IP block take a single input per cha 128 # Newer IP block take a single input per channel, instead of 4 inputs
129 # for both channels 129 # for both channels
130 - if: 130 - if:
131 properties: 131 properties:
132 compatible: 132 compatible:
133 contains: 133 contains:
134 enum: 134 enum:
135 - amlogic,meson-s4-pwm 135 - amlogic,meson-s4-pwm
136 then: 136 then:
137 properties: 137 properties:
138 clocks: 138 clocks:
139 items: 139 items:
140 - description: input clock of PWM 140 - description: input clock of PWM channel A
141 - description: input clock of PWM 141 - description: input clock of PWM channel B
142 clock-names: false 142 clock-names: false
143 required: 143 required:
144 - clocks 144 - clocks
145 145
146 - if: 146 - if:
147 properties: 147 properties:
148 compatible: 148 compatible:
149 contains: 149 contains:
150 enum: 150 enum:
151 - amlogic,meson-a1-pwm 151 - amlogic,meson-a1-pwm
152 then: 152 then:
153 required: 153 required:
154 - power-domains 154 - power-domains
155 155
156 additionalProperties: false 156 additionalProperties: false
157 157
158 examples: 158 examples:
159 - | 159 - |
160 pwm@8550 { 160 pwm@8550 {
161 compatible = "amlogic,meson-gxbb-pwm"; 161 compatible = "amlogic,meson-gxbb-pwm";
162 reg = <0x08550 0x10>; 162 reg = <0x08550 0x10>;
163 clocks = <&xtal>, <&xtal>; 163 clocks = <&xtal>, <&xtal>;
164 clock-names = "clkin0", "clkin1"; 164 clock-names = "clkin0", "clkin1";
165 #pwm-cells = <3>; 165 #pwm-cells = <3>;
166 }; 166 };
167 - | 167 - |
168 pwm@2000 { 168 pwm@2000 {
169 compatible = "amlogic,meson8-pwm-v2"; 169 compatible = "amlogic,meson8-pwm-v2";
170 reg = <0x1000 0x10>; 170 reg = <0x1000 0x10>;
171 clocks = <&xtal>, <0>, <&fdiv4>, <&fdiv5 171 clocks = <&xtal>, <0>, <&fdiv4>, <&fdiv5>;
172 #pwm-cells = <3>; 172 #pwm-cells = <3>;
173 }; 173 };
174 - | 174 - |
175 pwm@1000 { 175 pwm@1000 {
176 compatible = "amlogic,meson-s4-pwm"; 176 compatible = "amlogic,meson-s4-pwm";
177 reg = <0x1000 0x10>; 177 reg = <0x1000 0x10>;
178 clocks = <&pwm_src_a>, <&pwm_src_b>; 178 clocks = <&pwm_src_a>, <&pwm_src_b>;
179 #pwm-cells = <3>; 179 #pwm-cells = <3>;
180 }; 180 };
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