1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/net/can/renesas,rcar-canfd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Renesas R-Car CAN FD Controller
8
9 maintainers:
10 - Fabrizio Castro <fabrizio.castro.jz@renesas.com>
11
12 properties:
13 compatible:
14 oneOf:
15 - items:
16 - enum:
17 - renesas,r8a774a1-canfd # RZ/G2M
18 - renesas,r8a774b1-canfd # RZ/G2N
19 - renesas,r8a774c0-canfd # RZ/G2E
20 - renesas,r8a774e1-canfd # RZ/G2H
21 - renesas,r8a7795-canfd # R-Car H3
22 - renesas,r8a7796-canfd # R-Car M3-W
23 - renesas,r8a77961-canfd # R-Car M3-W+
24 - renesas,r8a77965-canfd # R-Car M3-N
25 - renesas,r8a77970-canfd # R-Car V3M
26 - renesas,r8a77980-canfd # R-Car V3H
27 - renesas,r8a77990-canfd # R-Car E3
28 - renesas,r8a77995-canfd # R-Car D3
29 - const: renesas,rcar-gen3-canfd # R-Car Gen3 and RZ/G2
30
31 - items:
32 - enum:
33 - renesas,r8a779a0-canfd # R-Car V3U
34 - renesas,r8a779g0-canfd # R-Car V4H
35 - renesas,r8a779h0-canfd # R-Car V4M
36 - const: renesas,rcar-gen4-canfd # R-Car Gen4
37
38 - items:
39 - enum:
40 - renesas,r9a07g043-canfd # RZ/G2UL and RZ/Five
41 - renesas,r9a07g044-canfd # RZ/G2{L,LC}
42 - renesas,r9a07g054-canfd # RZ/V2L
43 - const: renesas,rzg2l-canfd # RZ/G2L family
44
45 reg:
46 maxItems: 1
47
48 interrupts: true
49
50 clocks:
51 maxItems: 3
52
53 clock-names:
54 items:
55 - const: fck
56 - const: canfd
57 - const: can_clk
58
59 power-domains:
60 maxItems: 1
61
62 resets: true
63
64 renesas,no-can-fd:
65 $ref: /schemas/types.yaml#/definitions/flag
66 description:
67 The controller can operate in either CAN FD only mode (default) or
68 Classical CAN only mode. The mode is global to all channels.
69 Specify this property to put the controller in Classical CAN only mode.
70
71 assigned-clocks:
72 description:
73 Reference to the CANFD clock. The CANFD clock is a div6 clock and can be
74 used by both CAN (if present) and CAN FD controllers at the same time.
75 It needs to be scaled to maximum frequency if any of these controllers
76 use it.
77
78 assigned-clock-rates:
79 description: Maximum frequency of the CANFD clock.
80
81 patternProperties:
82 "^channel[0-7]$":
83 type: object
84 description:
85 The controller supports multiple channels and each is represented as a
86 child node. Each channel can be enabled/disabled individually.
87
88 properties:
89 phys:
90 maxItems: 1
91
92 additionalProperties: false
93
94 required:
95 - compatible
96 - reg
97 - interrupts
98 - interrupt-names
99 - clocks
100 - clock-names
101 - power-domains
102 - resets
103 - assigned-clocks
104 - assigned-clock-rates
105 - channel0
106 - channel1
107
108 allOf:
109 - $ref: can-controller.yaml#
110
111 - if:
112 properties:
113 compatible:
114 contains:
115 enum:
116 - renesas,rzg2l-canfd
117 then:
118 properties:
119 interrupts:
120 items:
121 - description: CAN global error interrupt
122 - description: CAN receive FIFO interrupt
123 - description: CAN0 error interrupt
124 - description: CAN0 transmit interrupt
125 - description: CAN0 transmit/receive FIFO receive completion interrupt
126 - description: CAN1 error interrupt
127 - description: CAN1 transmit interrupt
128 - description: CAN1 transmit/receive FIFO receive completion interrupt
129
130 interrupt-names:
131 items:
132 - const: g_err
133 - const: g_recc
134 - const: ch0_err
135 - const: ch0_rec
136 - const: ch0_trx
137 - const: ch1_err
138 - const: ch1_rec
139 - const: ch1_trx
140
141 resets:
142 maxItems: 2
143
144 reset-names:
145 items:
146 - const: rstp_n
147 - const: rstc_n
148
149 required:
150 - reset-names
151 else:
152 properties:
153 interrupts:
154 items:
155 - description: Channel interrupt
156 - description: Global interrupt
157
158 interrupt-names:
159 items:
160 - const: ch_int
161 - const: g_int
162
163 resets:
164 maxItems: 1
165
166 - if:
167 properties:
168 compatible:
169 contains:
170 const: renesas,r8a779h0-canfd
171 then:
172 patternProperties:
173 "^channel[5-7]$": false
174 else:
175 if:
176 not:
177 properties:
178 compatible:
179 contains:
180 const: renesas,rcar-gen4-canfd
181 then:
182 patternProperties:
183 "^channel[2-7]$": false
184
185 unevaluatedProperties: false
186
187 examples:
188 - |
189 #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
190 #include <dt-bindings/interrupt-controller/arm-gic.h>
191 #include <dt-bindings/power/r8a7795-sysc.h>
192
193 canfd: can@e66c0000 {
194 compatible = "renesas,r8a7795-canfd",
195 "renesas,rcar-gen3-canfd";
196 reg = <0xe66c0000 0x8000>;
197 interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
198 <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
199 interrupt-names = "ch_int", "g_int";
200 clocks = <&cpg CPG_MOD 914>,
201 <&cpg CPG_CORE R8A7795_CLK_CANFD>,
202 <&can_clk>;
203 clock-names = "fck", "canfd", "can_clk";
204 assigned-clocks = <&cpg CPG_CORE R8A7795_CLK_CANFD>;
205 assigned-clock-rates = <40000000>;
206 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
207 resets = <&cpg 914>;
208
209 channel0 {
210 };
211
212 channel1 {
213 };
214 };
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