[RFC PATCH v3 9/9] arm64: dts: rockchip: rk3568-rock-3b: Enable the NPU
From: Midgy BALON
Date: Thu Jun 04 2026 - 10:15:00 EST
Enable the NPU and its IOMMU on ROCK 3B.
vdd_npu is marked always-on so the rail is up before genpd de-idles the
NPU NoC at power-on: the PMU de-idle handshake needs the rail powered.
The PVTPLL compute clock is brought up later by the driver.
Signed-off-by: Midgy BALON <midgy971@xxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts
index 69001e453732e..7ac780ed313d5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts
@@ -330,8 +330,10 @@ regulator-state-mem {
vdd_npu: DCDC_REG4 {
regulator-name = "vdd_npu";
+ regulator-always-on;
+ regulator-boot-on;
regulator-initial-mode = <0x2>;
- regulator-min-microvolt = <500000>;
+ regulator-min-microvolt = <825000>;
regulator-max-microvolt = <1350000>;
regulator-ramp-delay = <6001>;
@@ -787,3 +789,13 @@ vp0_out_hdmi: endpoint@ROCKCHIP_VOP2_EP_HDMI0 {
remote-endpoint = <&hdmi_in_vp0>;
};
};
+
+&rknn_core_0 {
+ npu-supply = <&vdd_npu>;
+ status = "okay";
+};
+
+&rknn_mmu_0 {
+ status = "okay";
+};
+
--
2.39.5