linux-kernel - [PATCH 3/3] riscv: dts: spacemit: Enable USB3.0 on BananaPi-F3

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Message-Id: <20251101-k1-usb3dts-v1-3-dd2660e5740b@linux.dev>
Date: Sat, 01 Nov 2025 17:03:27 +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 3/3] riscv: dts: spacemit: Enable USB3.0 on BananaPi-F3

Enable the DWC3 USB 3.0 controller and its associated usbphy2 on the
Banana Pi F3 board.

The board utilizes a VLI VL817 hub, which requires two separate power
supplies: one VBUS and one for hub itself. Add two GPIO-controlled
fixed-regulators to manage this.

Signed-off-by: Ze Huang <huang.ze@...ux.dev>
---
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 47 +++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 6d566780aed9..4b67f44c7863 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -38,6 +38,25 @@ pcie_vcc_3v3: pcie-vcc3v3 {
 		regulator-max-microvolt = <3300000>;
 		regulator-always-on;
 	};
+
+	usb3_vbus: regulator-vbus-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "USB30_VBUS";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		gpio = <&gpio K1_GPIO(97) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	usb3_vhub: regulator-vhub-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "USB30_VHUB";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio K1_GPIO(123) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
 };
 
 &combo_phy {
@@ -135,3 +154,31 @@ &uart0 {
 	pinctrl-0 = <&uart0_2_cfg>;
 	status = "okay";
 };
+
+&usbphy2 {
+	status = "okay";
+};
+
+&usb_dwc3 {
+	dr_mode = "host";
+	vbus-supply = <&usb3_vbus>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_2_0: hub@1 {
+		compatible = "usb2109,2817";
+		reg = <0x1>;
+		vdd-supply = <&usb3_vhub>;
+		peer-hub = <&hub_3_0>;
+		reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>;
+	};
+
+	hub_3_0: hub@2 {
+		compatible = "usb2109,817";
+		reg = <0x2>;
+		vdd-supply = <&usb3_vhub>;
+		peer-hub = <&hub_2_0>;
+		reset-gpios = <&gpio K1_GPIO(124) GPIO_ACTIVE_LOW>;
+	};
+};

-- 
2.51.2