renesas,riic.yaml

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    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,riic.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Renesas RZ/A and RZ/G2L I2C Bus Interface (RIIC)
    8 
    9 maintainers:
   10   - Chris Brandt <chris.brandt@renesas.com>
   11   - Wolfram Sang <wsa+renesas@sang-engineering.com>
   12 
   13 allOf:
   14   - $ref: /schemas/i2c/i2c-controller.yaml#
   15 
   16 properties:
   17   compatible:
   18     items:
   19       - enum:
   20           - renesas,riic-r7s72100   # RZ/A1H
   21           - renesas,riic-r7s9210    # RZ/A2M
   22           - renesas,riic-r9a07g043  # RZ/G2UL
   23           - renesas,riic-r9a07g044  # RZ/G2{L,LC}
   24           - renesas,riic-r9a07g054  # RZ/V2L
   25       - const: renesas,riic-rz      # RZ/A or RZ/G2L
   26 
   27   reg:
   28     maxItems: 1
   29 
   30   interrupts:
   31     items:
   32       - description: Transmit End Interrupt
   33       - description: Receive Data Full Interrupt
   34       - description: Transmit Data Empty Interrupt
   35       - description: Stop Condition Detection Interrupt
   36       - description: Start Condition Detection Interrupt
   37       - description: NACK Reception Interrupt
   38       - description: Arbitration-Lost Interrupt
   39       - description: Timeout Interrupt
   40 
   41   interrupt-names:
   42     items:
   43       - const: tei
   44       - const: ri
   45       - const: ti
   46       - const: spi
   47       - const: sti
   48       - const: naki
   49       - const: ali
   50       - const: tmoi
   51 
   52   clock-frequency:
   53     description:
   54       Desired I2C bus clock frequency in Hz. The absence of this property
   55       indicates the default frequency 100 kHz.
   56 
   57   clocks:
   58     maxItems: 1
   59 
   60   power-domains:
   61     maxItems: 1
   62 
   63   resets:
   64     maxItems: 1
   65 
   66 required:
   67   - compatible
   68   - reg
   69   - interrupts
   70   - interrupt-names
   71   - clocks
   72   - clock-frequency
   73   - power-domains
   74   - '#address-cells'
   75   - '#size-cells'
   76 
   77 if:
   78   properties:
   79     compatible:
   80       contains:
   81         enum:
   82           - renesas,riic-r9a07g043
   83           - renesas,riic-r9a07g044
   84           - renesas,riic-r9a07g054
   85 then:
   86   required:
   87     - resets
   88 
   89 unevaluatedProperties: false
   90 
   91 examples:
   92   - |
   93     #include <dt-bindings/clock/r7s72100-clock.h>
   94     #include <dt-bindings/interrupt-controller/arm-gic.h>
   95 
   96     i2c0: i2c@fcfee000 {
   97             compatible = "renesas,riic-r7s72100", "renesas,riic-rz";
   98             reg = <0xfcfee000 0x44>;
   99             interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
  100                          <GIC_SPI 158 IRQ_TYPE_EDGE_RISING>,
  101                          <GIC_SPI 159 IRQ_TYPE_EDGE_RISING>,
  102                          <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
  103                          <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
  104                          <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
  105                          <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
  106                          <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
  107             interrupt-names = "tei", "ri", "ti", "spi", "sti", "naki", "ali",
  108                               "tmoi";
  109             clocks = <&mstp9_clks R7S72100_CLK_I2C0>;
  110             clock-frequency = <100000>;
  111             power-domains = <&cpg_clocks>;
  112             #address-cells = <1>;
  113             #size-cells = <0>;
  114     };

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sys/contrib/device-tree/Bindings/i2c/renesas,riic.yaml