Commit 25422e8f authored by Thierry Bultel's avatar Thierry Bultel Committed by Greg Kroah-Hartman
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dt-bindings: serial: Add compatible for Renesas RZ/T2H SoC in sci 



RSCI of RZ/T2H SoC (a.k.a r9a09g077), as a lot
of similarities with SCI in other Renesas SoC like G2L, G3S, V2L;
However, it has a different set of registers, and in addition to serial,
this IP also supports SCIe (encoder), SmartCard, i2c and spi.
This is why the 'renesas,sci' fallback for generic SCI does not apply for it.

Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Signed-off-by: default avatarThierry Bultel <thierry.bultel.yh@bp.renesas.com>
Link: https://lore.kernel.org/r/20250403212919.1137670-4-thierry.bultel.yh@bp.renesas.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b35f7a77

Documentation/devicetree/bindings/serial/renesas,rsci.yaml

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# 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>

  - Thierry Bultel <thierry.bultel.yh@bp.renesas.com>



allOf:

  - $ref: serial.yaml#



properties:

  compatible:

    const: renesas,r9a09g077-rsci      # RZ/T2H



  reg:

    maxItems: 1



  interrupts:

    items:

      - description: Error interrupt

      - description: Receive buffer full interrupt

      - description: Transmit buffer empty interrupt

      - description: Transmit end interrupt



  interrupt-names:

    items:

      - const: eri

      - const: rxi

      - const: txi

      - const: tei



  clocks:

    maxItems: 1



  clock-names:

    const: fck # UART functional clock



  power-domains:

    maxItems: 1



  uart-has-rtscts: false



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names

  - power-domains



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    #include <dt-bindings/clock/renesas-cpg-mssr.h>



    aliases {

        serial0 = &sci0;

    };



    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 108>;

        clock-names = "fck";

        power-domains = <&cpg>;

    };