renesas,sci.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/serial/renesas,sci.yaml#"
    5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    6 
    7 title: Renesas Serial Communication Interface
    8 
    9 maintainers:
   10   - Geert Uytterhoeven <geert+renesas@glider.be>
   11 
   12 allOf:
   13   - $ref: serial.yaml#
   14 
   15 properties:
   16   compatible:
   17     oneOf:
   18       - items:
   19           - enum:
   20               - renesas,r9a07g043-sci     # RZ/G2UL
   21               - renesas,r9a07g044-sci     # RZ/G2{L,LC}
   22               - renesas,r9a07g054-sci     # RZ/V2L
   23           - const: renesas,sci            # generic SCI compatible UART
   24 
   25       - items:
   26           - const: renesas,sci            # generic SCI compatible UART
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   interrupts:
   32     items:
   33       - description: Error interrupt
   34       - description: Receive buffer full interrupt
   35       - description: Transmit buffer empty interrupt
   36       - description: Transmit end interrupt
   37 
   38   interrupt-names:
   39     items:
   40       - const: eri
   41       - const: rxi
   42       - const: txi
   43       - const: tei
   44 
   45   clocks:
   46     minItems: 1
   47     maxItems: 2
   48 
   49   clock-names:
   50     minItems: 1
   51     maxItems: 2
   52     items:
   53       enum:
   54         - fck # UART functional clock
   55         - sck # optional external clock input
   56 
   57   uart-has-rtscts: false
   58 
   59 required:
   60   - compatible
   61   - reg
   62   - interrupts
   63   - clocks
   64   - clock-names
   65 
   66 if:
   67   properties:
   68     compatible:
   69       contains:
   70         enum:
   71           - renesas,r9a07g043-sci
   72           - renesas,r9a07g044-sci
   73           - renesas,r9a07g054-sci
   74 then:
   75   properties:
   76     resets:
   77       maxItems: 1
   78 
   79     power-domains:
   80       maxItems: 1
   81 
   82   required:
   83     - resets
   84     - power-domains
   85 
   86 unevaluatedProperties: false
   87 
   88 examples:
   89   - |
   90     #include <dt-bindings/clock/r9a07g044-cpg.h>
   91     #include <dt-bindings/interrupt-controller/arm-gic.h>
   92 
   93     aliases {
   94             serial0 = &sci0;
   95     };
   96 
   97     sci0: serial@1004d000 {
   98             compatible = "renesas,r9a07g044-sci", "renesas,sci";
   99             reg = <0x1004d000 0x400>;
  100             interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
  101                          <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
  102                          <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
  103                          <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
  104             interrupt-names = "eri", "rxi", "txi", "tei";
  105             clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
  106             clock-names = "fck";
  107             power-domains = <&cpg>;
  108             resets = <&cpg R9A07G044_SCI0_RST>;
  109     };

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sys/contrib/device-tree/Bindings/serial/renesas,sci.yaml