renesas,sci.yaml

  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
  7title: Renesas Serial Communication Interface
  8
  9maintainers:
 10  - Geert Uytterhoeven <geert+renesas@glider.be>
 11
 12allOf:
 13  - $ref: serial.yaml#
 14
 15properties:
 16  compatible:
 17    oneOf:
 18      - items:
 19          - enum:
 20              - renesas,r9a07g043-sci     # RZ/G2UL and RZ/Five
 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
 59required:
 60  - compatible
 61  - reg
 62  - interrupts
 63  - clocks
 64  - clock-names
 65
 66if:
 67  properties:
 68    compatible:
 69      contains:
 70        enum:
 71          - renesas,r9a07g043-sci
 72          - renesas,r9a07g044-sci
 73          - renesas,r9a07g054-sci
 74then:
 75  properties:
 76    resets:
 77      maxItems: 1
 78
 79    power-domains:
 80      maxItems: 1
 81
 82  required:
 83    - resets
 84    - power-domains
 85
 86unevaluatedProperties: false
 87
 88examples:
 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    };