Commit b3e29b6e authored by Rob Herring (Arm)'s avatar Rob Herring (Arm)
Browse files

dt-bindings: npu: Add Arm Ethos-U65/U85 



Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are
designed for edge AI inference applications.

Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Acked-by: default avatarTomeu Vizoso <tomeu@tomeuvizoso.net>
Link: https://patch.msgid.link/20251020-ethos-v6-1-ecebc383c4b7@kernel.org


Signed-off-by: default avatarRob Herring (Arm) <robh@kernel.org>
parent 81233d54

Documentation/devicetree/bindings/npu/arm,ethos.yaml

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Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/npu/arm,ethos.yaml#

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



title: Arm Ethos U65/U85



maintainers:

  - Rob Herring <robh@kernel.org>



description: >

  The Arm Ethos-U NPUs are designed for IoT inference applications. The NPUs

  can accelerate 8-bit and 16-bit integer quantized networks:



    Transformer networks (U85 only)

    Convolutional Neural Networks (CNN)

    Recurrent Neural Networks (RNN)



  Further documentation is available here:



    U65 TRM: https://developer.arm.com/documentation/102023/

    U85 TRM: https://developer.arm.com/documentation/102685/



properties:

  compatible:

    oneOf:

      - items:

          - enum:

              - fsl,imx93-npu

          - const: arm,ethos-u65

      - items:

          - {}

          - const: arm,ethos-u85



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    maxItems: 2



  clock-names:

    items:

      - const: core

      - const: apb



  power-domains:

    maxItems: 1



  sram:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts

  - clocks



additionalProperties: false



examples:

  - |

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

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

    #include <dt-bindings/clock/imx93-clock.h>



    npu@4a900000 {

        compatible = "fsl,imx93-npu", "arm,ethos-u65";

        reg = <0x4a900000 0x1000>;

        interrupts = <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>;

        power-domains = <&mlmix>;

        clocks = <&clk IMX93_CLK_ML>, <&clk IMX93_CLK_ML_APB>;

        clock-names = "core", "apb";

        sram = <&sram>;

    };

...