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 7title: Renesas R-Car CAN FD Controller 8 9maintainers: 10 - Fabrizio Castro <fabrizio.castro.jz@renesas.com> 11 12properties: 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 $ref: /schemas/types.yaml#/definitions/flag 66 description: 67 The controller can operate in either CAN FD only mode (default) or 68 Classical CAN only mode. The mode is global to all channels. 69 Specify this property to put the controller in Classical CAN only mode. 70 71 assigned-clocks: 72 description: 73 Reference to the CANFD clock. The CANFD clock is a div6 clock and can be 74 used by both CAN (if present) and CAN FD controllers at the same time. 75 It needs to be scaled to maximum frequency if any of these controllers 76 use it. 77 78 assigned-clock-rates: 79 description: Maximum frequency of the CANFD clock. 80 81patternProperties: 82 "^channel[0-7]$": 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 94required: 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 108allOf: 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 185unevaluatedProperties: false 186 187examples: 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 }; 215