[PATCH v3 02/10] arm64: dts: rockchip: Add nodes for NPU and its MMU to rk3588s

Tomeu Vizoso
2025-05-16T16:54:23Z

See Chapter 36 "RKNN" from the RK3588 TRM (Part 1).

This is a derivative of NVIDIA's NVDLA, but with its own front-end
processor.

The IP is divided in three cores, programmed independently. The first
core though is special, requiring to be powered on before any of the
others can be used.

The IOMMU of the first core is also special in that it has two subunits
(read/write?) that need to be programmed in sync.

v2:
- Have one device for each NPU core (Sebastian Reichel)
- Have one device for each IOMMU (Sebastian Reichel)
- Correctly sort nodes (Diederik de Haas)
- Add rockchip,iommu compatible to IOMMU nodes (Sebastian Reichel)

v3:
- Adapt to a split of the register block in the DT bindings (Nicolas
Frattaroli)

Signed-off-by: Tomeu Vizoso <tomeu@tomeuvizoso.net>
---
arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 85 +++++++++++++++++++++++++++
1 file changed, 85 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
index 1e18ad93ba0ebdad31642b88ff0f90ef4e8dc76f..7b961ab838212fad8e4a70390fdc917a828433a9 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
@@ -1136,6 +1136,91 @@ power-domain@RK3588_PD_SDMMC {
};
};

+ rknn_core_top: npu-core@fdab0000 {
+ compatible = "rockchip,rk3588-rknn-core-top", "rockchip,rknn-core-top";
+ reg = <0x0 0xfdab0000 0x0 0x1000>,
+ <0x0 0xfdab1000 0x0 0x1000>,
+ <0x0 0xfdab3000 0x0 0x1000>;
+ reg-names = "pc", "cna", "core";
+ interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&scmi_clk SCMI_CLK_NPU>, <&cru PCLK_NPU_ROOT>,
+ <&cru ACLK_NPU0>, <&cru HCLK_NPU0>;
+ clock-names = "aclk", "hclk", "npu", "pclk";
+ assigned-clocks = <&scmi_clk SCMI_CLK_NPU>;
+ assigned-clock-rates = <200000000>;
+ resets = <&cru SRST_A_RKNN0>, <&cru SRST_H_RKNN0>;
+ reset-names = "srst_a", "srst_h";
+ power-domains = <&power RK3588_PD_NPUTOP>;
+ iommus = <&rknn_mmu_top>;
+ status = "disabled";
+ };
+
+ rknn_mmu_top: iommu@fdab9000 {
+ compatible = "rockchip,rk3588-iommu", "rockchip,rk3568-iommu";
+ reg = <0x0 0xfdab9000 0x0 0x100>,
+ <0x0 0xfdaba000 0x0 0x100>;
+ interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cru ACLK_NPU0>, <&cru HCLK_NPU0>;
+ clock-names = "aclk", "iface";
+ #iommu-cells = <0>;
+ power-domains = <&power RK3588_PD_NPUTOP>;
+ status = "disabled";
+ };
+
+ rknn_core_1: npu-core@fdac0000 {
+ compatible = "rockchip,rk3588-rknn-core", "rockchip,rknn-core";
+ reg = <0x0 0xfdac0000 0x0 0x1000>,
+ <0x0 0xfdac1000 0x0 0x1000>,
+ <0x0 0xfdac3000 0x0 0x1000>;
+ reg-names = "pc", "cna", "core";
+ interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cru ACLK_NPU1>, <&cru HCLK_NPU1>;
+ clock-names = "aclk", "hclk";
+ resets = <&cru SRST_A_RKNN1>, <&cru SRST_H_RKNN1>;
+ reset-names = "srst_a", "srst_h";
+ power-domains = <&power RK3588_PD_NPU1>;
+ iommus = <&rknn_mmu_1>;
+ status = "disabled";
+ };
+
+ rknn_mmu_1: iommu@fdac9000 {
+ compatible = "rockchip,rk3588-iommu", "rockchip,rk3568-iommu";
+ reg = <0x0 0xfdaca000 0x0 0x100>;
+ interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cru ACLK_NPU1>, <&cru HCLK_NPU1>;
+ clock-names = "aclk", "iface";
+ #iommu-cells = <0>;
+ power-domains = <&power RK3588_PD_NPU1>;
+ status = "disabled";
+ };
+
+ rknn_core_2: npu-core@fdad0000 {
+ compatible = "rockchip,rk3588-rknn-core", "rockchip,rknn-core";
+ reg = <0x0 0xfdad0000 0x0 0x1000>,
+ <0x0 0xfdad1000 0x0 0x1000>,
+ <0x0 0xfdad3000 0x0 0x1000>;
+ reg-names = "pc", "cna", "core";
+ interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cru ACLK_NPU2>, <&cru HCLK_NPU2>;
+ clock-names = "aclk", "hclk";
+ resets = <&cru SRST_A_RKNN2>, <&cru SRST_H_RKNN2>;
+ reset-names = "srst_a", "srst_h";
+ power-domains = <&power RK3588_PD_NPU2>;
+ iommus = <&rknn_mmu_2>;
+ status = "disabled";
+ };
+
+ rknn_mmu_2: iommu@fdad9000 {
+ compatible = "rockchip,rk3588-iommu", "rockchip,rk3568-iommu";
+ reg = <0x0 0xfdada000 0x0 0x100>;
+ interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&cru ACLK_NPU2>, <&cru HCLK_NPU2>;
+ clock-names = "aclk", "iface";
+ #iommu-cells = <0>;
+ power-domains = <&power RK3588_PD_NPU2>;
+ status = "disabled";
+ };
+
vpu121: video-codec@fdb50000 {
compatible = "rockchip,rk3588-vpu121", "rockchip,rk3568-vpu";
reg = <0x0 0xfdb50000 0x0 0x800>;

--
2.49.0