| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Renesas R-Mobile I2C Bus Interface (IIC) |
| 8 | |
| 9 | maintainers: |
| 10 | - Wolfram Sang <wsa+renesas@sang-engineering.com> |
| 11 | |
| 12 | properties: |
| 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 | |
| 84 | required: |
| 85 | - compatible |
| 86 | - reg |
| 87 | - interrupts |
| 88 | - clocks |
| 89 | - power-domains |
| 90 | - '#address-cells' |
| 91 | - '#size-cells' |
| 92 | |
| 93 | allOf: |
| 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 | |
| 128 | unevaluatedProperties: false |
| 129 | |
| 130 | examples: |
| 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 | }; |