xref: /linux/Documentation/devicetree/bindings/net/can/xilinx,can.yaml (revision ed7171ff9fabc49ae6ed42fbd082a576473836fc) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/can/xilinx,can.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title:
8  Xilinx CAN and CANFD controller
9
10maintainers:
11  - Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com>
12
13properties:
14  compatible:
15    enum:
16      - xlnx,zynq-can-1.0
17      - xlnx,axi-can-1.00.a
18      - xlnx,canfd-1.0
19      - xlnx,canfd-2.0
20
21  reg:
22    maxItems: 1
23
24  interrupts:
25    maxItems: 1
26
27  clocks:
28    minItems: 1
29    maxItems: 2
30
31  clock-names:
32    maxItems: 2
33
34  power-domains:
35    maxItems: 1
36
37  tx-fifo-depth:
38    $ref: /schemas/types.yaml#/definitions/uint32
39    description: CAN Tx fifo depth (Zynq, Axi CAN).
40
41  rx-fifo-depth:
42    $ref: /schemas/types.yaml#/definitions/uint32
43    description: CAN Rx fifo depth (Zynq, Axi CAN, CAN FD in sequential Rx mode)
44
45  tx-mailbox-count:
46    $ref: /schemas/types.yaml#/definitions/uint32
47    description: CAN Tx mailbox buffer count (CAN FD)
48
49  resets:
50    maxItems: 1
51
52  xlnx,has-ecc:
53    $ref: /schemas/types.yaml#/definitions/flag
54    description: CAN TX_OL, TX_TL and RX FIFOs have ECC support(AXI CAN)
55
56required:
57  - compatible
58  - reg
59  - interrupts
60  - clocks
61  - clock-names
62
63unevaluatedProperties: false
64
65allOf:
66  - $ref: can-controller.yaml#
67  - if:
68      properties:
69        compatible:
70          contains:
71            enum:
72              - xlnx,zynq-can-1.0
73
74    then:
75      properties:
76        clock-names:
77          items:
78            - const: can_clk
79            - const: pclk
80      required:
81        - tx-fifo-depth
82        - rx-fifo-depth
83
84  - if:
85      properties:
86        compatible:
87          contains:
88            enum:
89              - xlnx,axi-can-1.00.a
90
91    then:
92      properties:
93        clock-names:
94          items:
95            - const: can_clk
96            - const: s_axi_aclk
97      required:
98        - tx-fifo-depth
99        - rx-fifo-depth
100
101  - if:
102      properties:
103        compatible:
104          contains:
105            enum:
106              - xlnx,canfd-1.0
107              - xlnx,canfd-2.0
108
109    then:
110      properties:
111        clock-names:
112          items:
113            - const: can_clk
114            - const: s_axi_aclk
115      required:
116        - tx-mailbox-count
117        - rx-fifo-depth
118
119examples:
120  - |
121    #include <dt-bindings/interrupt-controller/arm-gic.h>
122
123    can@e0008000 {
124        compatible = "xlnx,zynq-can-1.0";
125        reg = <0xe0008000 0x1000>;
126        clocks = <&clkc 19>, <&clkc 36>;
127        clock-names = "can_clk", "pclk";
128        interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
129        interrupt-parent = <&intc>;
130        tx-fifo-depth = <0x40>;
131        rx-fifo-depth = <0x40>;
132    };
133
134  - |
135    can@40000000 {
136        compatible = "xlnx,axi-can-1.00.a";
137        reg = <0x40000000 0x10000>;
138        clocks = <&clkc 0>, <&clkc 1>;
139        clock-names = "can_clk", "s_axi_aclk";
140        interrupt-parent = <&intc>;
141        interrupts = <GIC_SPI 59 IRQ_TYPE_EDGE_RISING>;
142        tx-fifo-depth = <0x40>;
143        rx-fifo-depth = <0x40>;
144        xlnx,has-ecc;
145    };
146
147  - |
148    can@40000000 {
149        compatible = "xlnx,canfd-1.0";
150        reg = <0x40000000 0x2000>;
151        clocks = <&clkc 0>, <&clkc 1>;
152        clock-names = "can_clk", "s_axi_aclk";
153        interrupt-parent = <&intc>;
154        interrupts = <GIC_SPI 59 IRQ_TYPE_EDGE_RISING>;
155        tx-mailbox-count = <0x20>;
156        rx-fifo-depth = <0x20>;
157    };
158
159  - |
160    can@ff060000 {
161        compatible = "xlnx,canfd-2.0";
162        reg = <0xff060000 0x6000>;
163        clocks = <&clkc 0>, <&clkc 1>;
164        clock-names = "can_clk", "s_axi_aclk";
165        interrupt-parent = <&intc>;
166        interrupts = <GIC_SPI 59 IRQ_TYPE_EDGE_RISING>;
167        tx-mailbox-count = <0x20>;
168        rx-fifo-depth = <0x40>;
169    };
170