1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/serial/renesas,scif.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Renesas Serial Communication Interface with FIFO (SCIF) 8 9maintainers: 10 - Geert Uytterhoeven <geert+renesas@glider.be> 11 12allOf: 13 - $ref: serial.yaml# 14 15properties: 16 compatible: 17 oneOf: 18 - items: 19 - enum: 20 - renesas,scif-r7s72100 # RZ/A1H 21 - const: renesas,scif # generic SCIF compatible UART 22 23 - items: 24 - enum: 25 - renesas,scif-r7s9210 # RZ/A2 26 27 - items: 28 - enum: 29 - renesas,scif-r8a7778 # R-Car M1 30 - renesas,scif-r8a7779 # R-Car H1 31 - const: renesas,rcar-gen1-scif # R-Car Gen1 32 - const: renesas,scif # generic SCIF compatible UART 33 34 - items: 35 - enum: 36 - renesas,scif-r8a7742 # RZ/G1H 37 - renesas,scif-r8a7743 # RZ/G1M 38 - renesas,scif-r8a7744 # RZ/G1N 39 - renesas,scif-r8a7745 # RZ/G1E 40 - renesas,scif-r8a77470 # RZ/G1C 41 - renesas,scif-r8a7790 # R-Car H2 42 - renesas,scif-r8a7791 # R-Car M2-W 43 - renesas,scif-r8a7792 # R-Car V2H 44 - renesas,scif-r8a7793 # R-Car M2-N 45 - renesas,scif-r8a7794 # R-Car E2 46 - const: renesas,rcar-gen2-scif # R-Car Gen2 and RZ/G1 47 - const: renesas,scif # generic SCIF compatible UART 48 49 - items: 50 - enum: 51 - renesas,scif-r8a774a1 # RZ/G2M 52 - renesas,scif-r8a774b1 # RZ/G2N 53 - renesas,scif-r8a774c0 # RZ/G2E 54 - renesas,scif-r8a774e1 # RZ/G2H 55 - renesas,scif-r8a7795 # R-Car H3 56 - renesas,scif-r8a7796 # R-Car M3-W 57 - renesas,scif-r8a77961 # R-Car M3-W+ 58 - renesas,scif-r8a77965 # R-Car M3-N 59 - renesas,scif-r8a77970 # R-Car V3M 60 - renesas,scif-r8a77980 # R-Car V3H 61 - renesas,scif-r8a77990 # R-Car E3 62 - renesas,scif-r8a77995 # R-Car D3 63 - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2 64 - const: renesas,scif # generic SCIF compatible UART 65 66 - items: 67 - enum: 68 - renesas,scif-r8a779a0 # R-Car V3U 69 - renesas,scif-r8a779f0 # R-Car S4-8 70 - renesas,scif-r8a779g0 # R-Car V4H 71 - const: renesas,rcar-gen4-scif # R-Car Gen4 72 - const: renesas,scif # generic SCIF compatible UART 73 74 - items: 75 - enum: 76 - renesas,scif-r9a07g044 # RZ/G2{L,LC} 77 78 - items: 79 - enum: 80 - renesas,scif-r9a07g043 # RZ/G2UL and RZ/Five 81 - renesas,scif-r9a07g054 # RZ/V2L 82 - const: renesas,scif-r9a07g044 # RZ/G2{L,LC} fallback 83 84 reg: 85 maxItems: 1 86 87 interrupts: 88 oneOf: 89 - items: 90 - description: A combined interrupt 91 - items: 92 - description: Error interrupt 93 - description: Receive buffer full interrupt 94 - description: Transmit buffer empty interrupt 95 - description: Break interrupt 96 - items: 97 - description: Error interrupt 98 - description: Receive buffer full interrupt 99 - description: Transmit buffer empty interrupt 100 - description: Break interrupt 101 - description: Data Ready interrupt 102 - description: Transmit End interrupt 103 104 interrupt-names: 105 oneOf: 106 - items: 107 - const: eri 108 - const: rxi 109 - const: txi 110 - const: bri 111 - items: 112 - const: eri 113 - const: rxi 114 - const: txi 115 - const: bri 116 - const: dri 117 - const: tei 118 119 clocks: 120 minItems: 1 121 maxItems: 4 122 123 clock-names: 124 minItems: 1 125 maxItems: 4 126 items: 127 enum: 128 - fck # UART functional clock 129 - sck # optional external clock input 130 - brg_int # optional internal clock source for BRG frequency divider 131 - scif_clk # optional external clock source for BRG frequency divider 132 133 power-domains: 134 maxItems: 1 135 136 resets: 137 maxItems: 1 138 139 dmas: 140 minItems: 2 141 maxItems: 4 142 description: 143 Must contain a list of pairs of references to DMA specifiers, one for 144 transmission, and one for reception. 145 146 dma-names: 147 minItems: 2 148 maxItems: 4 149 items: 150 enum: 151 - tx 152 - rx 153 154required: 155 - compatible 156 - reg 157 - interrupts 158 - clocks 159 - clock-names 160 - power-domains 161 162if: 163 properties: 164 compatible: 165 contains: 166 enum: 167 - renesas,rcar-gen2-scif 168 - renesas,rcar-gen3-scif 169 - renesas,rcar-gen4-scif 170 - renesas,scif-r9a07g044 171then: 172 required: 173 - resets 174 175unevaluatedProperties: false 176 177examples: 178 - | 179 #include <dt-bindings/clock/r8a7791-cpg-mssr.h> 180 #include <dt-bindings/interrupt-controller/arm-gic.h> 181 #include <dt-bindings/power/r8a7791-sysc.h> 182 aliases { 183 serial0 = &scif0; 184 }; 185 186 scif0: serial@e6e60000 { 187 compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif", 188 "renesas,scif"; 189 reg = <0xe6e60000 64>; 190 interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>; 191 clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>, 192 <&scif_clk>; 193 clock-names = "fck", "brg_int", "scif_clk"; 194 dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>; 195 dma-names = "tx", "rx", "tx", "rx"; 196 power-domains = <&sysc R8A7791_PD_ALWAYS_ON>; 197 resets = <&cpg 721>; 198 }; 199