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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>;
};
|
