# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/renesas,rsci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas RSCI Serial Communication Interface

maintainers:
  - Geert Uytterhoeven <geert+renesas@glider.be>
  - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

properties:
  compatible:
    oneOf:
      - enum:
          - renesas,r9a08g046-rsci # RZ/G3L
          - renesas,r9a09g047-rsci # RZ/G3E
          - renesas,r9a09g077-rsci # RZ/T2H

      - items:
          - enum:
              - renesas,r9a09g056-rsci # RZ/V2N
              - renesas,r9a09g057-rsci # RZ/V2H(P)
          - const: renesas,r9a09g047-rsci

      - items:
          - const: renesas,r9a09g087-rsci # RZ/N2H
          - const: renesas,r9a09g077-rsci # RZ/T2H

  reg:
    maxItems: 1

  interrupts:
    minItems: 4
    items:
      - description: Error interrupt
      - description: Receive buffer full interrupt
      - description: Transmit buffer empty interrupt
      - description: Transmit end interrupt
      - description: Active edge detection interrupt
      - description: Break field detection interrupt

  interrupt-names:
    minItems: 4
    items:
      - const: eri
      - const: rxi
      - const: txi
      - const: tei
      - const: aed
      - const: bfd

  clocks:
    minItems: 2
    maxItems: 6

  clock-names:
    oneOf:
      - items:
          - const: operation
          - const: bus
          - const: sck # optional external clock input

        minItems: 2

      - items:
          - const: pclk
          - const: tclk
          - const: tclk_div4
          - const: tclk_div16
          - const: tclk_div64
          - const: sck # optional external clock input

        minItems: 5

  resets:
    items:
      - description: Input for resetting the APB clock
      - description: Input for resetting TCLK

  reset-names:
    items:
      - const: presetn
      - const: tresetn

  power-domains:
    maxItems: 1

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - power-domains

allOf:
  - $ref: serial.yaml#

  - if:
      properties:
        compatible:
          contains:
            const: renesas,r9a09g077-rsci
    then:
      properties:
        interrupts:
          maxItems: 4

        interrupt-names:
          maxItems: 4

        clocks:
          minItems: 2
          maxItems: 3

        clock-names:
          minItems: 2
          maxItems: 3

        resets: false

  - if:
      properties:
        compatible:
          contains:
            const: renesas,r9a09g047-rsci
    then:
      properties:
        interrupts:
          minItems: 6

        interrupt-names:
          minItems: 6

        clocks:
          minItems: 5
          maxItems: 6

        clock-names:
          minItems: 5
          maxItems: 6

      required:
        - resets
        - reset-names

  - if:
      properties:
        compatible:
          contains:
            const: renesas,r9a08g046-rsci
    then:
      properties:
        interrupts:
          minItems: 6

        interrupt-names:
          minItems: 6

        clocks:
          minItems: 2
          maxItems: 3

        clock-names:
          minItems: 2
          maxItems: 3

      required:
        - resets
        - reset-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/renesas-cpg-mssr.h>
 
    sci0: serial@80005000 {
        compatible = "renesas,r9a09g077-rsci";
        reg = <0x80005000 0x400>;
        interrupts = <GIC_SPI 590 IRQ_TYPE_LEVEL_HIGH>,
                     <GIC_SPI 591 IRQ_TYPE_EDGE_RISING>,
                     <GIC_SPI 592 IRQ_TYPE_EDGE_RISING>,
                     <GIC_SPI 593 IRQ_TYPE_LEVEL_HIGH>;
        interrupt-names = "eri", "rxi", "txi", "tei";
        clocks = <&cpg CPG_MOD 8>, <&cpg CPG_CORE 13>;
        clock-names = "operation", "bus";
        power-domains = <&cpg>;
    };