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From: Midgy BALON <midgy971@gmail.com>
To: tomeu@tomeuvizoso.net, ogabbay@kernel.org, heiko@sntech.de,
	robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	joro@8bytes.org, will@kernel.org
Cc: robin.murphy@arm.com, dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH v3 9/9] arm64: dts: rockchip: rk3568-rock-3b: Enable the NPU
Date: Thu,  4 Jun 2026 13:52:55 +0000	[thread overview]
Message-ID: <20260604135255.62682-10-midgy971@gmail.com> (raw)
In-Reply-To: <20260604135255.62682-1-midgy971@gmail.com>

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@gmail.com>
---
 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


WARNING: multiple messages have this Message-ID (diff)
From: Midgy BALON <midgy971@gmail.com>
To: tomeu@tomeuvizoso.net, ogabbay@kernel.org, heiko@sntech.de,
	robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
	joro@8bytes.org, will@kernel.org
Cc: robin.murphy@arm.com, dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH v3 9/9] arm64: dts: rockchip: rk3568-rock-3b: Enable the NPU
Date: Thu,  4 Jun 2026 13:52:55 +0000	[thread overview]
Message-ID: <20260604135255.62682-10-midgy971@gmail.com> (raw)
In-Reply-To: <20260604135255.62682-1-midgy971@gmail.com>

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@gmail.com>
---
 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


_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

  parent reply	other threads:[~2026-06-04 13:53 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-04 13:52 [RFC PATCH v3 0/9] accel: rocket: Add RK3568 NPU support Midgy BALON
2026-06-04 13:52 ` Midgy BALON
2026-06-04 13:52 ` [RFC PATCH v3 1/9] accel: rocket: Introduce per-SoC rocket_soc_data Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:08   ` sashiko-bot
2026-06-04 13:52 ` [RFC PATCH v3 2/9] accel: rocket: Derive DMA width and core count from match data Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:05   ` sashiko-bot
2026-06-04 13:52 ` [RFC PATCH v3 3/9] accel: rocket: Add RK3568 SoC support Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:05   ` sashiko-bot
2026-06-04 13:52 ` [RFC PATCH v3 4/9] accel: rocket: Reset the NPU before detaching the IOMMU on timeout Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:10   ` sashiko-bot
2026-06-04 13:52 ` [RFC PATCH v3 5/9] accel: rocket: Keep the IOMMU domain attached across jobs Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:08   ` sashiko-bot
2026-06-04 13:52 ` [RFC PATCH v3 6/9] iommu/rockchip: Clear AUTO_GATING bit 1 on the RK356x v1 IOMMU Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:04   ` sashiko-bot
2026-06-04 14:20   ` Tomeu Vizoso
2026-06-04 14:20     ` Tomeu Vizoso
2026-06-05  1:59   ` Chaoyi Chen
2026-06-05  1:59     ` Chaoyi Chen
2026-06-04 13:52 ` [RFC PATCH v3 7/9] dt-bindings: npu: rockchip, rk3588-rknn-core: Add RK3568 Midgy BALON
2026-06-04 13:52   ` [RFC PATCH v3 7/9] dt-bindings: npu: rockchip,rk3588-rknn-core: " Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:08   ` sashiko-bot
2026-06-04 16:55     ` Conor Dooley
2026-06-04 13:52 ` [RFC PATCH v3 8/9] arm64: dts: rockchip: rk356x: Add the NPU and its IOMMU Midgy BALON
2026-06-04 13:52   ` Midgy BALON
2026-06-04 14:11   ` sashiko-bot
2026-06-04 13:52 ` Midgy BALON [this message]
2026-06-04 13:52   ` [RFC PATCH v3 9/9] arm64: dts: rockchip: rk3568-rock-3b: Enable the NPU Midgy BALON
2026-06-05  1:36 ` [RFC PATCH v3 0/9] accel: rocket: Add RK3568 NPU support Chaoyi Chen
2026-06-05  1:36   ` Chaoyi Chen

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