linux-kernel - [PATCH 1/2] arm64: dts: rockchip: enable NPU on rk3588-tiger

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Message-ID: <20250812085213.1071106-1-heiko@sntech.de>
Date: Tue, 12 Aug 2025 10:52:12 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: heiko@...ech.de
Cc: quentin.schulz@...rry.de,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Heiko Stuebner <heiko.stuebner@...rry.de>
Subject: [PATCH 1/2] arm64: dts: rockchip: enable NPU on rk3588-tiger

From: Heiko Stuebner <heiko.stuebner@...rry.de>

Enable the NPU cores and their mmus and wire up the supply-regulator.
The regulator itself was already defined, but it does not need to be
always on - the npu can control it.

Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
---
 .../arm64/boot/dts/rockchip/rk3588-tiger.dtsi | 35 ++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
index f4bebd25e938..9859f31d2894 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
@@ -194,7 +194,6 @@ vdd_npu_s0: regulator@42 {
 		reg = <0x42>;
 		fcs,suspend-voltage-selector = <1>;
 		regulator-name = "vdd_npu_s0";
-		regulator-always-on;
 		regulator-boot-on;
 		regulator-min-microvolt = <550000>;
 		regulator-max-microvolt = <950000>;
@@ -337,6 +336,10 @@ &pd_gpu {
 	domain-supply = <&vdd_gpu_s0>;
 };
 
+&pd_npu {
+	domain-supply = <&vdd_npu_s0>;
+};
+
 &pinctrl {
 	emmc {
 		emmc_reset: emmc-reset {
@@ -375,6 +378,36 @@ &pwm0 {
 	pinctrl-names = "default";
 };
 
+&rknn_core_0 {
+	npu-supply = <&vdd_npu_s0>;
+	sram-supply = <&vdd_npu_s0>;
+	status = "okay";
+};
+
+&rknn_core_1 {
+	npu-supply = <&vdd_npu_s0>;
+	sram-supply = <&vdd_npu_s0>;
+	status = "okay";
+};
+
+&rknn_core_2 {
+	npu-supply = <&vdd_npu_s0>;
+	sram-supply = <&vdd_npu_s0>;
+	status = "okay";
+};
+
+&rknn_mmu_0 {
+	status = "okay";
+};
+
+&rknn_mmu_1 {
+	status = "okay";
+};
+
+&rknn_mmu_2 {
+	status = "okay";
+};
+
 &saradc {
 	vref-supply = <&vcc_1v8_s0>;
 	status = "okay";
-- 
2.47.2