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Thu, 04 Jun 2026 06:53:04 -0700 (PDT) From: Midgy BALON 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 Message-Id: <20260604135255.62682-10-midgy971@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260604135255.62682-1-midgy971@gmail.com> References: <20260604135255.62682-1-midgy971@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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