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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/renesas,rmobile-iic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Mobile I2C Bus Interface (IIC)
+
+maintainers:
+ - Wolfram Sang <wsa+renesas@sang-engineering.com>
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,iic-r8a73a4 # R-Mobile APE6
+ - renesas,iic-r8a7740 # R-Mobile A1
+ - renesas,iic-sh73a0 # SH-Mobile AG5
+ - const: renesas,rmobile-iic # Generic
+
+ - items:
+ - enum:
+ - renesas,iic-r8a7742 # RZ/G1H
+ - renesas,iic-r8a7743 # RZ/G1M
+ - renesas,iic-r8a7744 # RZ/G1N
+ - renesas,iic-r8a7745 # RZ/G1E
+ - renesas,iic-r8a7790 # R-Car H2
+ - renesas,iic-r8a7791 # R-Car M2-W
+ - renesas,iic-r8a7792 # R-Car V2H
+ - renesas,iic-r8a7793 # R-Car M2-N
+ - renesas,iic-r8a7794 # R-Car E2
+ - const: renesas,rcar-gen2-iic # R-Car Gen2 and RZ/G1
+ - const: renesas,rmobile-iic # Generic
+
+ - items:
+ - enum:
+ - renesas,iic-r8a774a1 # RZ/G2M
+ - renesas,iic-r8a774b1 # RZ/G2N
+ - renesas,iic-r8a774c0 # RZ/G2E
+ - renesas,iic-r8a774e1 # RZ/G2H
+ - renesas,iic-r8a7795 # R-Car H3
+ - renesas,iic-r8a7796 # R-Car M3-W
+ - renesas,iic-r8a77961 # R-Car M3-W+
+ - renesas,iic-r8a77965 # R-Car M3-N
+ - renesas,iic-r8a77990 # R-Car E3
+ - const: renesas,rcar-gen3-iic # R-Car Gen3 and RZ/G2
+ - const: renesas,rmobile-iic # Generic
+
+ reg:
+ maxItems: 1
+
+ interrupts: true
+
+ clock-frequency:
+ description:
+ Desired I2C bus clock frequency in Hz. The absence of this property
+ indicates the default frequency 100 kHz.
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ dmas:
+ minItems: 2
+ maxItems: 4
+ description:
+ Must contain a list of pairs of references to DMA specifiers, one for
+ transmission, and one for reception.
+
+ dma-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ enum:
+ - tx
+ - rx
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - power-domains
+ - '#address-cells'
+ - '#size-cells'
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,iic-r8a7740
+ - renesas,iic-sh73a0
+ then:
+ properties:
+ interrupts:
+ items:
+ - description: Arbitration Lost Interrupt (ALI)
+ - description: Non-acknowledge Detection Interrupt (TACKI)
+ - description: Wait Interrupt (WAITI)
+ - description: Data Transmit Enable interrupt (DTEI)
+ else:
+ properties:
+ interrupts:
+ items:
+ - description: Single combined interrupt
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-iic
+ - renesas,rcar-gen3-iic
+ then:
+ required:
+ - resets
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/r8a7790-sysc.h>
+
+ iic0: i2c@e6500000 {
+ compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic",
+ "renesas,rmobile-iic";
+ reg = <0xe6500000 0x425>;
+ interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 318>;
+ clock-frequency = <400000>;
+ dmas = <&dmac0 0x61>, <&dmac0 0x62>, <&dmac1 0x61>, <&dmac1 0x62>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+ resets = <&cpg 318>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };