| Message ID | 20250926-ethos-v3-1-6bd24373e4f5@kernel.org |
|---|---|
| State | Under Review |
| Headers | show |
| Series | accel: Add Arm Ethos-U NPU | expand |
| Context | Check | Description |
|---|---|---|
| robh/checkpatch | success | |
| robh/patch-applied | success | |
| robh/dt-meta-schema | success |
On Fri, Sep 26, 2025 at 03:00:48PM -0500, Rob Herring (Arm) wrote: > Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are > designed for edge AI inference applications. > > Signed-off-by: Rob Herring (Arm) <robh@kernel.org> > --- > .../devicetree/bindings/npu/arm,ethos.yaml | 79 ++++++++++++++++++++++ > 1 file changed, 79 insertions(+) > > diff --git a/Documentation/devicetree/bindings/npu/arm,ethos.yaml b/Documentation/devicetree/bindings/npu/arm,ethos.yaml > new file mode 100644 > index 000000000000..716c4997f976 > --- /dev/null > +++ b/Documentation/devicetree/bindings/npu/arm,ethos.yaml > @@ -0,0 +1,79 @@ > +# 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: > + - {} what's means {} here ?, just not allow arm,ethos-u85 alone? Reviewed-by: Frank Li <Frank.Li@nxp.com> > + - 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>; > + }; > +... > > -- > 2.51.0 >
On Mon, Sep 29, 2025 at 1:54 PM Frank Li <Frank.li@nxp.com> wrote: > > On Fri, Sep 26, 2025 at 03:00:48PM -0500, Rob Herring (Arm) wrote: > > Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are > > designed for edge AI inference applications. > > > > Signed-off-by: Rob Herring (Arm) <robh@kernel.org> > > --- > > .../devicetree/bindings/npu/arm,ethos.yaml | 79 ++++++++++++++++++++++ > > 1 file changed, 79 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/npu/arm,ethos.yaml b/Documentation/devicetree/bindings/npu/arm,ethos.yaml > > new file mode 100644 > > index 000000000000..716c4997f976 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/npu/arm,ethos.yaml > > @@ -0,0 +1,79 @@ > > +# 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: > > + - {} > > what's means {} here ?, just not allow arm,ethos-u85 alone? Yes, u85 support is currently on a FVP model. The naming for it isn't really clear yet nor is it clear if it ever will be. So really just a placeholder until there is a chip using it. It keeps folks from using just the fallback. > > Reviewed-by: Frank Li <Frank.Li@nxp.com> Thanks, Rob
diff --git a/Documentation/devicetree/bindings/npu/arm,ethos.yaml b/Documentation/devicetree/bindings/npu/arm,ethos.yaml new file mode 100644 index 000000000000..716c4997f976 --- /dev/null +++ b/Documentation/devicetree/bindings/npu/arm,ethos.yaml @@ -0,0 +1,79 @@ +# 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>; + }; +...
Add a binding schema for Arm Ethos-U65/U85 NPU. The Arm Ethos-U NPUs are designed for edge AI inference applications. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> --- .../devicetree/bindings/npu/arm,ethos.yaml | 79 ++++++++++++++++++++++ 1 file changed, 79 insertions(+)