renesas,rmobile-iic.yaml (4169B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/i2c/renesas,rmobile-iic.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Renesas R-Mobile I2C Bus Interface (IIC) 8 9maintainers: 10 - Wolfram Sang <wsa+renesas@sang-engineering.com> 11 12properties: 13 compatible: 14 oneOf: 15 - items: 16 - enum: 17 - renesas,iic-r8a73a4 # R-Mobile APE6 18 - renesas,iic-r8a7740 # R-Mobile A1 19 - renesas,iic-sh73a0 # SH-Mobile AG5 20 - const: renesas,rmobile-iic # Generic 21 22 - items: 23 - enum: 24 - renesas,iic-r8a7742 # RZ/G1H 25 - renesas,iic-r8a7743 # RZ/G1M 26 - renesas,iic-r8a7744 # RZ/G1N 27 - renesas,iic-r8a7745 # RZ/G1E 28 - renesas,iic-r8a7790 # R-Car H2 29 - renesas,iic-r8a7791 # R-Car M2-W 30 - renesas,iic-r8a7792 # R-Car V2H 31 - renesas,iic-r8a7793 # R-Car M2-N 32 - renesas,iic-r8a7794 # R-Car E2 33 - const: renesas,rcar-gen2-iic # R-Car Gen2 and RZ/G1 34 - const: renesas,rmobile-iic # Generic 35 36 - items: 37 - enum: 38 - renesas,iic-r8a774a1 # RZ/G2M 39 - renesas,iic-r8a774b1 # RZ/G2N 40 - renesas,iic-r8a774c0 # RZ/G2E 41 - renesas,iic-r8a774e1 # RZ/G2H 42 - renesas,iic-r8a7795 # R-Car H3 43 - renesas,iic-r8a7796 # R-Car M3-W 44 - renesas,iic-r8a77961 # R-Car M3-W+ 45 - renesas,iic-r8a77965 # R-Car M3-N 46 - renesas,iic-r8a77990 # R-Car E3 47 - const: renesas,rcar-gen3-iic # R-Car Gen3 and RZ/G2 48 - const: renesas,rmobile-iic # Generic 49 50 reg: 51 maxItems: 1 52 53 interrupts: true 54 55 clock-frequency: 56 description: 57 Desired I2C bus clock frequency in Hz. The absence of this property 58 indicates the default frequency 100 kHz. 59 60 clocks: 61 maxItems: 1 62 63 power-domains: 64 maxItems: 1 65 66 resets: 67 maxItems: 1 68 69 dmas: 70 minItems: 2 71 maxItems: 4 72 description: 73 Must contain a list of pairs of references to DMA specifiers, one for 74 transmission, and one for reception. 75 76 dma-names: 77 minItems: 2 78 maxItems: 4 79 items: 80 enum: 81 - tx 82 - rx 83 84required: 85 - compatible 86 - reg 87 - interrupts 88 - clocks 89 - power-domains 90 - '#address-cells' 91 - '#size-cells' 92 93allOf: 94 - $ref: /schemas/i2c/i2c-controller.yaml# 95 96 - if: 97 properties: 98 compatible: 99 contains: 100 enum: 101 - renesas,iic-r8a7740 102 - renesas,iic-sh73a0 103 then: 104 properties: 105 interrupts: 106 items: 107 - description: Arbitration Lost Interrupt (ALI) 108 - description: Non-acknowledge Detection Interrupt (TACKI) 109 - description: Wait Interrupt (WAITI) 110 - description: Data Transmit Enable interrupt (DTEI) 111 else: 112 properties: 113 interrupts: 114 items: 115 - description: Single combined interrupt 116 117 - if: 118 properties: 119 compatible: 120 contains: 121 enum: 122 - renesas,rcar-gen2-iic 123 - renesas,rcar-gen3-iic 124 then: 125 required: 126 - resets 127 128unevaluatedProperties: false 129 130examples: 131 - | 132 #include <dt-bindings/clock/r8a7790-cpg-mssr.h> 133 #include <dt-bindings/interrupt-controller/arm-gic.h> 134 #include <dt-bindings/power/r8a7790-sysc.h> 135 136 iic0: i2c@e6500000 { 137 compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic", 138 "renesas,rmobile-iic"; 139 reg = <0xe6500000 0x425>; 140 interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>; 141 clocks = <&cpg CPG_MOD 318>; 142 clock-frequency = <400000>; 143 dmas = <&dmac0 0x61>, <&dmac0 0x62>, <&dmac1 0x61>, <&dmac1 0x62>; 144 dma-names = "tx", "rx", "tx", "rx"; 145 power-domains = <&sysc R8A7790_PD_ALWAYS_ON>; 146 resets = <&cpg 318>; 147 #address-cells = <1>; 148 #size-cells = <0>; 149 };