[RFC PATCH v2 7/8] arm64: dts: rockchip: rk3576: add NPU (RKNN) nodes
From: Jiaxing Hu <hidden>
Date: 2026-07-18 03:13:26
Also in:
linux-devicetree, linux-iommu, linux-pm, linux-rockchip, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add the RK3576 NPU: rknn_core_0/1 and rknn_mmu_0/1, with register addresses, GIC_SPI 247/248 interrupts, clocks, resets and power-domains. Run the full RKNN clock set (CLK_RKNN_DSU0, ACLK_RKNN0/1, HCLK_RKNN_ROOT, ACLK/HCLK_RKNN_CBUF) during the NPU0/NPU1 power transitions and on the MMU nodes; without the functional and CBUF clocks the block powers on but its registers (including the IOMMU banks) read back dead. Drive the RKNN BIU reset (SRST_A_RKNN0/1_BIU) from the power domain so it fires before the IOMMU resumes. Signed-off-by: Jiaxing Hu <redacted> --- arch/arm64/boot/dts/rockchip/rk3576.dtsi | 78 +++++++++++++++++++++++- 1 file changed, 76 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index e12a2a0cf..5033f7628 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi@@ -1070,14 +1070,22 @@ power-domain@RK3576_PD_NPUTOP { power-domain@RK3576_PD_NPU0 { reg = <RK3576_PD_NPU0>; clocks = <&cru HCLK_RKNN_ROOT>, - <&cru ACLK_RKNN0>; + <&cru ACLK_RKNN0>, + <&cru CLK_RKNN_DSU0>, + <&cru ACLK_RKNN_CBUF>, + <&cru HCLK_RKNN_CBUF>; + resets = <&cru SRST_A_RKNN0_BIU>; pm_qos = <&qos_npu_m0>; #power-domain-cells = <0>; }; power-domain@RK3576_PD_NPU1 { reg = <RK3576_PD_NPU1>; clocks = <&cru HCLK_RKNN_ROOT>, - <&cru ACLK_RKNN1>; + <&cru ACLK_RKNN1>, + <&cru CLK_RKNN_DSU0>, + <&cru ACLK_RKNN_CBUF>, + <&cru HCLK_RKNN_CBUF>; + resets = <&cru SRST_A_RKNN1_BIU>; pm_qos = <&qos_npu_m1>; #power-domain-cells = <0>; };
@@ -1804,6 +1812,72 @@ qos_npu_m1ro: qos@27f22100 { reg = <0x0 0x27f22100 0x0 0x20>; }; + rknn_core_0: npu@27700000 { + compatible = "rockchip,rk3576-rknn-core"; + reg = <0x0 0x27700000 0x0 0x1000>, + <0x0 0x27701000 0x0 0x1000>, + <0x0 0x27703000 0x0 0x1000>, + <0x0 0x27704000 0x0 0x1000>, + <0x0 0x27705000 0x0 0x1000>; + reg-names = "pc", "cna", "core", "dpu", "dpu_rdma"; + interrupts = <GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RKNN0>, <&cru HCLK_RKNN_ROOT>, + <&cru CLK_RKNN_DSU0>, <&cru PCLK_NPUTOP_ROOT>, + <&cru ACLK_RKNN_CBUF>, <&cru HCLK_RKNN_CBUF>; + clock-names = "aclk", "hclk", "npu", "pclk", + "aclk_cbuf", "hclk_cbuf"; + resets = <&cru SRST_A_RKNN0>; + reset-names = "srst_a"; + power-domains = <&power RK3576_PD_NPU0>; + iommus = <&rknn_mmu_0>; + status = "disabled"; + }; + + rknn_mmu_0: iommu@27702000 { + compatible = "rockchip,rk3576-iommu", "rockchip,rk3568-iommu"; + reg = <0x0 0x27702000 0x0 0x100>, + <0x0 0x27702100 0x0 0x100>; + interrupts = <GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RKNN0>, <&cru HCLK_RKNN_ROOT>, + <&cru CLK_RKNN_DSU0>, <&cru ACLK_RKNN_CBUF>, + <&cru HCLK_RKNN_CBUF>; + #iommu-cells = <0>; + power-domains = <&power RK3576_PD_NPU0>; + status = "disabled"; + }; + + rknn_core_1: npu@27710000 { + compatible = "rockchip,rk3576-rknn-core"; + reg = <0x0 0x27710000 0x0 0x1000>, + <0x0 0x27711000 0x0 0x1000>, + <0x0 0x27713000 0x0 0x1000>, + <0x0 0x27714000 0x0 0x1000>, + <0x0 0x27715000 0x0 0x1000>; + reg-names = "pc", "cna", "core", "dpu", "dpu_rdma"; + interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RKNN1>, <&cru HCLK_RKNN_ROOT>, + <&cru CLK_RKNN_DSU0>, <&cru PCLK_NPUTOP_ROOT>; + clock-names = "aclk", "hclk", "npu", "pclk"; + resets = <&cru SRST_A_RKNN1>; + reset-names = "srst_a"; + power-domains = <&power RK3576_PD_NPU1>; + iommus = <&rknn_mmu_1>; + status = "disabled"; + }; + + rknn_mmu_1: iommu@2770a000 { + compatible = "rockchip,rk3576-iommu", "rockchip,rk3568-iommu"; + reg = <0x0 0x2770a000 0x0 0x100>, + <0x0 0x2770a100 0x0 0x100>; + interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RKNN1>, <&cru HCLK_RKNN_ROOT>, + <&cru CLK_RKNN_DSU0>, <&cru ACLK_RKNN_CBUF>, + <&cru HCLK_RKNN_CBUF>; + #iommu-cells = <0>; + power-domains = <&power RK3576_PD_NPU1>; + status = "disabled"; + }; + gmac0: ethernet@2a220000 { compatible = "rockchip,rk3576-gmac", "snps,dwmac-4.20a"; reg = <0x0 0x2a220000 0x0 0x10000>;
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2.43.0