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Fri, 17 Jul 2026 04:55:15 -0400 (EDT) From: Jiaxing Hu To: tomeu@tomeuvizoso.net, heiko@sntech.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, ulfh@kernel.org, p.zabel@pengutronix.de, ogabbay@kernel.org Cc: dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, iommu@lists.linux.dev, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jiaxing Hu Subject: [RFC PATCH 9/9] arm64: dts: rockchip: rk3576-rock-4d: enable NPU Date: Fri, 17 Jul 2026 20:50:47 +1200 Message-ID: <20260717085220.3212274-10-gahing@gahingwoo.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260717085220.3212274-1-gahing@gahingwoo.com> References: <20260717085220.3212274-1-gahing@gahingwoo.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Enable rknn_core_0 and rknn_mmu_0 on the Radxa ROCK 4D. Supply the NPU rail (vdd_npu_s0) via npu-supply; it is marked regulator-always-on for now because the NPU power sequencing is still being brought up (see the cover letter) -- happy to switch to proper runtime control once the compute path is sorted. Signed-off-by: Jiaxing Hu --- arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts index 272af1012..09d2fc98b 100644 --- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts +++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts @@ -442,6 +442,7 @@ regulator-state-mem { }; vdd_npu_s0: dcdc-reg2 { + regulator-always-on; regulator-boot-on; regulator-enable-ramp-delay = <400>; regulator-min-microvolt = <550000>; @@ -869,3 +870,18 @@ vp0_out_hdmi: endpoint@ROCKCHIP_VOP2_EP_HDMI0 { remote-endpoint = <&hdmi_in_vp0>; }; }; + +&rknn_core_0 { + npu-supply = <&vdd_npu_s0>; + /* + * Power BOTH NPU domains (NPU0 + NPU1) like the vendor's single NPU node, + * even though rocket computes only on core 0: the CBUF->CMAC read path is + * only fully powered with NPU1 up. rocket attaches the multi-PD list. + */ + power-domains = <&power RK3576_PD_NPU0>, <&power RK3576_PD_NPU1>; + status = "okay"; +}; + +&rknn_mmu_0 { + status = "okay"; +}; -- 2.43.0