[PATCH v14 14/15] arm64: dts: rockchip: add NPU (RKNN) nodes to rk3576
From: Jiaxing Hu <hidden>
Date: 2026-09-24 10:24:43
Also in:
dri-devel, linux-devicetree, linux-iommu, linux-pm, linux-rockchip, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add the two RKNN cores and their IOMMUs, disabled, and label PD_NPU so a board can give it the NPU rail. Each core lists both core domains, its own first, as tested. Assign CLK_RKNN_DSU0 594 MHz. Nothing in mainline sets its rate or the NPU rail, and at the 786 MHz it comes up at, on the 750 mV a ROCK 4D boots with, two cores running together write wrong words, 11 to 25 in each pass of 5400 rows. 594 MHz is clean, and Rockchip's OPP table asks only 725 mV of its 500 and 600 MHz steps. Signed-off-by: Jiaxing Hu <redacted> --- arch/arm64/boot/dts/rockchip/rk3576.dtsi | 74 +++++++++++++++++++++++- 1 file changed, 73 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index 26aaf4320..e9cd11b58 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi@@ -1042,7 +1042,7 @@ power: power-controller { #address-cells = <1>; #size-cells = <0>; - power-domain@RK3576_PD_NPU { + pd_npu: power-domain@RK3576_PD_NPU { reg = <RK3576_PD_NPU>; #power-domain-cells = <1>; #address-cells = <1>;
@@ -1269,6 +1269,78 @@ power-domain@RK3576_PD_VO1 { }; }; + rknn_core_0: npu@27700000 { + compatible = "rockchip,rk3576-rknn-core"; + reg = <0x0 0x27700000 0x0 0x1000>, + <0x0 0x27701000 0x0 0x1000>, + <0x0 0x27703000 0x0 0x1000>; + reg-names = "pc", "cna", "core"; + 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"; + assigned-clocks = <&cru CLK_RKNN_DSU0>; + assigned-clock-rates = <594000000>; + resets = <&cru SRST_A_RKNN0>; + reset-names = "srst_a"; + power-domains = <&power RK3576_PD_NPU0>, <&power RK3576_PD_NPU1>; + iommus = <&rknn_mmu_0>; + status = "disabled"; + }; + + rknn_mmu_0: iommu@27702000 { + compatible = "rockchip,rk3576-npu-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>; + clock-names = "aclk", "iface", "npu", + "aclk_cbuf", "hclk_cbuf"; + #iommu-cells = <0>; + power-domains = <&power RK3576_PD_NPU0>; + status = "disabled"; + }; + + rknn_core_1: npu@27708000 { + compatible = "rockchip,rk3576-rknn-core"; + reg = <0x0 0x27708000 0x0 0x1000>, + <0x0 0x27709000 0x0 0x1000>, + <0x0 0x2770b000 0x0 0x1000>; + reg-names = "pc", "cna", "core"; + interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RKNN1>, <&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"; + assigned-clocks = <&cru CLK_RKNN_DSU0>; + assigned-clock-rates = <594000000>; + resets = <&cru SRST_A_RKNN1>; + reset-names = "srst_a"; + power-domains = <&power RK3576_PD_NPU1>, <&power RK3576_PD_NPU0>; + iommus = <&rknn_mmu_1>; + status = "disabled"; + }; + + rknn_mmu_1: iommu@2770a000 { + compatible = "rockchip,rk3576-npu-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>; + clock-names = "aclk", "iface", "npu", + "aclk_cbuf", "hclk_cbuf"; + #iommu-cells = <0>; + power-domains = <&power RK3576_PD_NPU1>; + status = "disabled"; + }; + gpu: gpu@27800000 { compatible = "rockchip,rk3576-mali", "arm,mali-bifrost"; reg = <0x0 0x27800000 0x0 0x20000>;
--
2.43.0