linux-kernel - [PATCH 2/3] riscv: dts: spacemit: Add DWC3 USB 3.0 controller node for K1

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Message-Id: <20251101-k1-usb3dts-v1-2-dd2660e5740b@linux.dev>
Date: Sat, 01 Nov 2025 17:03:26 +0800
From: Ze Huang <huang.ze@...ux.dev>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Paul Walmsley <pjw@...nel.org>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>, Yixun Lan <dlan@...too.org>
Cc: devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 spacemit@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Ze Huang <huang.ze@...ux.dev>
Subject: [PATCH 2/3] riscv: dts: spacemit: Add DWC3 USB 3.0 controller node
 for K1

Add node for the Synopsys DWC3 USB 3.0 host controller on the K1 SoC.
The controller resides on the 'storage-bus' and uses its DMA
translations.

Signed-off-by: Ze Huang <huang.ze@...ux.dev>
---
 arch/riscv/boot/dts/spacemit/k1.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index d4d3c6d88a29..1d1c6276e9d0 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -1010,6 +1010,30 @@ storage-bus {
 			#size-cells = <2>;
 			dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>;
 
+			usb_dwc3: usb@...00000 {
+				compatible = "spacemit,k1-dwc3";
+				reg = <0x0 0xc0a00000 0x0 0x10000>;
+				clocks = <&syscon_apmu CLK_USB30>;
+				clock-names = "usbdrd30";
+				interrupts = <125>;
+				phys = <&usbphy2>, <&combo_phy PHY_TYPE_USB3>;
+				phy-names = "usb2-phy", "usb3-phy";
+				phy_type = "utmi";
+				resets = <&syscon_apmu RESET_USB30_AHB>,
+					 <&syscon_apmu RESET_USB30_VCC>,
+					 <&syscon_apmu RESET_USB30_PHY>;
+				reset-names = "ahb", "vcc", "phy";
+				reset-delay = <2>;
+				snps,hsphy_interface = "utmi";
+				snps,dis_enblslpm_quirk;
+				snps,dis-u2-freeclk-exists-quirk;
+				snps,dis-del-phy-power-chg-quirk;
+				snps,dis_u2_susphy_quirk;
+				snps,dis_u3_susphy_quirk;
+				snps,dis_rxdet_inp3_quirk;
+				status = "disabled";
+			};
+
 			emmc: mmc@...81000 {
 				compatible = "spacemit,k1-sdhci";
 				reg = <0x0 0xd4281000 0x0 0x200>;

-- 
2.51.2