Add the bindings for the Neural Processing Unit IP from Rockchip. v2: - Adapt to new node structure (one node per core, each with its own IOMMU) - Several misc. fixes from Sebastian Reichel
v3: - Split register block in its constituent subblocks, and only require the ones that the kernel would ever use (Nicolas Frattaroli) - Group supplies (Rob Herring) - Explain the way in which the top core is special (Rob Herring) v4: - Change required node name to npu@ (Rob Herring and Krzysztof Kozlowski) - Remove unneeded items: (Krzysztof Kozlowski) - Fix use of minItems/maxItems (Krzysztof Kozlowski) - Add reg-names to list of required properties (Krzysztof Kozlowski) - Fix example (Krzysztof Kozlowski) v5: - Rename file to rockchip,rk3588-rknn-core.yaml (Krzysztof Kozlowski) - Streamline compatible property (Krzysztof Kozlowski) Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.com> Signed-off-by: Tomeu Vizoso <to...@tomeuvizoso.net> --- .../bindings/npu/rockchip,rk3588-rknn-core.yaml | 147 +++++++++++++++++++++ 1 file changed, 147 insertions(+) diff --git a/Documentation/devicetree/bindings/npu/rockchip,rk3588-rknn-core.yaml b/Documentation/devicetree/bindings/npu/rockchip,rk3588-rknn-core.yaml new file mode 100644 index 0000000000000000000000000000000000000000..9eb426367afcbc03c387d43c4b8250cdd1b9ee86 --- /dev/null +++ b/Documentation/devicetree/bindings/npu/rockchip,rk3588-rknn-core.yaml @@ -0,0 +1,147 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/npu/rockchip,rk3588-rknn-core.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Neural Processing Unit IP from Rockchip + +maintainers: + - Tomeu Vizoso <to...@tomeuvizoso.net> + +description: + Rockchip IP for accelerating inference of neural networks, based on NVIDIA's + open source NVDLA IP. + + There is to be a node per each core in the NPU. In Rockchip's design there + will be one core that is special and needs to be powered on before any of the + other cores can be used. This special core is called the top core and should + have the compatible string that corresponds to top cores. + +properties: + $nodename: + pattern: '^npu@[a-f0-9]+$' + + compatible: + enum: + - rockchip,rk3588-rknn-core-top + - rockchip,rk3588-rknn-core + + reg: + maxItems: 3 + + reg-names: + items: + - const: pc + - const: cna + - const: core + + clocks: + minItems: 2 + maxItems: 4 + + clock-names: + items: + - const: aclk + - const: hclk + - const: npu + - const: pclk + minItems: 2 + + interrupts: + maxItems: 1 + + iommus: + maxItems: 1 + + npu-supply: true + + power-domains: + maxItems: 1 + + resets: + maxItems: 2 + + reset-names: + items: + - const: srst_a + - const: srst_h + + sram-supply: true + +required: + - compatible + - reg + - reg-names + - clocks + - clock-names + - interrupts + - iommus + - power-domains + - resets + - reset-names + - npu-supply + - sram-supply + +allOf: + - if: + properties: + compatible: + contains: + enum: + - rockchip,rknn-core-top + then: + properties: + clocks: + minItems: 4 + + clock-names: + minItems: 4 + - if: + properties: + compatible: + contains: + enum: + - rockchip,rknn-core + then: + properties: + clocks: + maxItems: 2 + clock-names: + maxItems: 2 + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/rockchip,rk3588-cru.h> + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/power/rk3588-power.h> + #include <dt-bindings/reset/rockchip,rk3588-cru.h> + + bus { + #address-cells = <2>; + #size-cells = <2>; + + npu@fdab0000 { + compatible = "rockchip,rk3588-rknn-core-top"; + reg = <0x0 0xfdab0000 0x0 0x1000>, + <0x0 0xfdab1000 0x0 0x1000>, + <0x0 0xfdab3000 0x0 0x1000>; + reg-names = "pc", "cna", "core"; + assigned-clocks = <&scmi_clk SCMI_CLK_NPU>; + assigned-clock-rates = <200000000>; + clocks = <&cru ACLK_NPU0>, <&cru HCLK_NPU0>, + <&scmi_clk SCMI_CLK_NPU>, <&cru PCLK_NPU_ROOT>; + clock-names = "aclk", "hclk", "npu", "pclk"; + interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH 0>; + iommus = <&rknn_mmu_top>; + npu-supply = <&vdd_npu_s0>; + power-domains = <&power RK3588_PD_NPUTOP>; + resets = <&cru SRST_A_RKNN0>, <&cru SRST_H_RKNN0>; + reset-names = "srst_a", "srst_h"; + sram-supply = <&vdd_npu_mem_s0>; + }; + }; +... -- 2.49.0
