Commit 2631c2b8 authored by Inochi Amaoto's avatar Inochi Amaoto Committed by Thomas Gleixner
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dt-bindings: interrupt-controller: Add T-HEAD C900 ACLINT SSWI device 



Sophgo SG2044 has a new version of T-HEAD C920, which implement a fully
featured T-HEAD ACLINT device. This ACLINT device contains a SSWI device to
support fast S-mode IPI.

Add necessary compatible string for the T-HEAD ACLINT SSWI device.

Signed-off-by: default avatarInochi Amaoto <inochiama@gmail.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/all/20241031060859.722258-2-inochiama@gmail.com
Link: https://www.xrvm.com/product/xuantie/C920
parent 194c4f56

Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-sswi.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/interrupt-controller/thead,c900-aclint-sswi.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: T-HEAD C900 ACLINT Supervisor-level Software Interrupt Device



maintainers:

  - Inochi Amaoto <inochiama@outlook.com>



description:

  The SSWI device is a part of the THEAD ACLINT device. It provides

  supervisor-level IPI functionality for a set of HARTs on a THEAD

  platform. It provides a register to set an IPI (SETSSIP) for each

  HART connected to the SSWI device.



properties:

  compatible:

    items:

      - enum:

          - sophgo,sg2044-aclint-sswi

      - const: thead,c900-aclint-sswi



  reg:

    maxItems: 1



  "#interrupt-cells":

    const: 0



  interrupt-controller: true



  interrupts-extended:

    minItems: 1

    maxItems: 4095



additionalProperties: false



required:

  - compatible

  - reg

  - "#interrupt-cells"

  - interrupt-controller

  - interrupts-extended



examples:

  - |

    interrupt-controller@94000000 {

      compatible = "sophgo,sg2044-aclint-sswi", "thead,c900-aclint-sswi";

      reg = <0x94000000 0x00004000>;

      #interrupt-cells = <0>;

      interrupt-controller;

      interrupts-extended = <&cpu1intc 1>,

                            <&cpu2intc 1>,

                            <&cpu3intc 1>,

                            <&cpu4intc 1>;

    };

...