Add the bindings for Neutron, a Neural Processing Unit from NXP.
Signed-off-by: Jiwei Fu jiwei.fu@nxp.com Signed-off-by: Ioana Ciocoi-Radulescu ruxandra.radulescu@nxp.com --- v2: - clock fixes: add description, rename, make clocks mandatory - rename node from neutron to npu - fix indentation --- .../devicetree/bindings/npu/nxp,imx95-neutron.yaml | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+)
diff --git a/Documentation/devicetree/bindings/npu/nxp,imx95-neutron.yaml b/Documentation/devicetree/bindings/npu/nxp,imx95-neutron.yaml new file mode 100644 index 000000000000..a06de4bc3f0a --- /dev/null +++ b/Documentation/devicetree/bindings/npu/nxp,imx95-neutron.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/npu/nxp,imx95-neutron.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP Neutron NPU + +maintainers: + - Ioana Ciocoi-Radulescu ruxandra.radulescu@nxp.com + - Jiwei Fu jiwei.fu@nxp.com + +description: + Neutron is an NPU from NXP targeting edge AI inference applications. + Initially supported on i.MX95 SoCs. + +properties: + compatible: + enum: + - nxp,imx95-neutron + + reg: + items: + - description: Register space + - description: Instruction area of the TCM space + - description: Data area of the TCM space + + reg-names: + items: + - const: regs + - const: itcm + - const: dtcm + + memory-region: + description: + Phandle referencing a "shared-dma-pool" to be used for Neutron + inference buffers, which need to be 1MB aligned. + + The memory region must be defined with alignment of 1MB and size + should be large enough to accommodate the targeted ML models. It + should be marked as reusable. + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Core clock + - description: APB bus clock + + clock-names: + items: + - const: core + - const: apb + + iommus: + maxItems: 1 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - reg-names + - memory-region + - interrupts + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + bus { + #address-cells = <2>; + #size-cells = <2>; + + npu@4ab00000 { + compatible = "nxp,imx95-neutron"; + reg = <0x0 0x4ab00000 0x0 0x00000400>, + <0x0 0x4AB10000 0x0 0x00010000>, + <0x0 0x4AB08000 0x0 0x00008000>; + reg-names = "regs", "itcm", "dtcm"; + memory-region = <&neutron_pool>; + interrupts = <GIC_SPI 318 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&scmi_clk 68>, <&scmi_clk 67>; + clock-names = "core", "apb"; + power-domains = <&scmi_devpd 20>; + }; + }; +...