[PATCH v3 9/9] arm64: dts: st: Add USB nodes on stm32mp251

Marek Vasut marex at nabladev.com
Sat Aug 22 00:46:42 PDT 2026


From: Pankaj Dev <pankaj.dev at st.com>

Add USB controller and PHY nodes to stm32mp251 DT.
This includes two USB 2.0 FEMTO PHYs, USB 2.0 host
controller and DWC3 DRD controller nodes.

Signed-off-by: Pankaj Dev <pankaj.dev at st.com>
Co-developed-by: Marek Vasut <marex at nabladev.com>
Signed-off-by: Marek Vasut <marex at nabladev.com>
---
Cc: Alexandre Torgue <alexandre.torgue at foss.st.com>
Cc: Christian Bruel <christian.bruel at foss.st.com>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
Cc: Neil Armstrong <neil.armstrong at linaro.org>
Cc: Pankaj Dev <pankaj.dev at st.com>
Cc: Rahul Kumar <rahul.kumar05 at st.com>
Cc: Rob Herring <robh at kernel.org>
Cc: Rosen Penev <rosenp at gmail.com>
Cc: Thinh Nguyen <Thinh.Nguyen at synopsys.com>
Cc: Vinod Koul <vkoul at kernel.org>
Cc: devicetree at vger.kernel.org
Cc: kernel at dh-electronics.com
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-phy at lists.infradead.org
Cc: linux-stm32 at st-md-mailman.stormreply.com
Cc: linux-usb at vger.kernel.org
---
V2: - Fix up Sob/Cdb lines
    - Move PHY into syscfg subnode
    - Turn st,stm32mp25-syscfg into simple-mfd
    - Use clock-cells = <1> to discern OSC and future PLL clock from the PHY
V3: - Describe OHCI clock as the CMN clock
    - Fix up Sob/Cdb lines further
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 65 +++++++++++++++++++++++++-
 1 file changed, 64 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 6e985f115b195..dd2f7ddd9b634 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -1746,6 +1746,47 @@ stmmac_axi_config_1: stmmac-axi-config {
 				};
 			};
 
+			usbh_ohci: usb at 482e0000 {
+				compatible = "generic-ohci";
+				reg = <0x482e0000 0x1000>;
+				access-controllers = <&rifsc 63>;
+				clocks = <&usb2_phy1 1>, <&rcc CK_BUS_USB2OHCI>;
+				interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
+				phys = <&usb2_phy1>;
+				phy-names = "usb";
+				resets = <&rcc USBH_R>;
+				status = "disabled";
+			};
+
+			usbh_ehci: usb at 482f0000 {
+				compatible = "generic-ehci";
+				reg = <0x482f0000 0x1000>;
+				access-controllers = <&rifsc 63>;
+				clocks = <&usb2_phy1 0>, <&rcc CK_BUS_USB2EHCI>;
+				companion = <&usbh_ohci>;
+				interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_HIGH>;
+				phys = <&usb2_phy1>;
+				phy-names = "usb";
+				resets = <&rcc USBH_R>;
+				status = "disabled";
+			};
+
+			usb3dr: usb at 48300000 {
+				compatible = "st,stm32mp25-dwc3";
+				reg = <0x48300000 0x100000>;
+				access-controllers = <&rifsc 66>;
+				clocks = <&rcc CK_KER_USB2PHY2>,
+					 <&rcc CK_BUS_USB3DR>,
+					 <&rcc CK_KER_USB2PHY2>;
+				clock-names = "ref", "bus_early", "suspend";
+				interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_HIGH>;
+				phys = <&usb2_phy2>, <&combophy PHY_TYPE_USB3>;
+				phy-names = "usb2-phy", "usb3-phy";
+				resets = <&rcc USB3DR_R>;
+				st,syscfg = <&syscfg 0x4800>;
+				status = "disabled";
+			};
+
 			pcie_ep: pcie-ep at 48400000 {
 				compatible = "st,stm32mp25-pcie-ep";
 				reg = <0x48400000 0x100000>,
@@ -2002,9 +2043,31 @@ exti1: interrupt-controller at 44220000 {
 		};
 
 		syscfg: syscon at 44230000 {
-			compatible = "st,stm32mp25-syscfg", "syscon";
+			compatible = "st,stm32mp25-syscfg", "syscon", "simple-mfd";
 			reg = <0x44230000 0x10000>;
 			#clock-cells = <0>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			usb2_phy1: phy at 2400 {
+				compatible = "st,stm32mp25-usb2phy1";
+				reg = <0x2400 0x24>;
+				#phy-cells = <0>;
+				#clock-cells = <1>;
+				clocks = <&rcc CK_KER_USB2PHY1>;
+				resets = <&rcc USB2PHY1_R>;
+				status = "disabled";
+			};
+
+			usb2_phy2: phy at 2800 {
+				compatible = "st,stm32mp25-usb2phy2";
+				reg = <0x2800 0xc>;
+				#phy-cells = <0>;
+				#clock-cells = <1>;
+				clocks = <&rcc CK_KER_USB2PHY2EN>;
+				resets = <&rcc USB2PHY2_R>;
+				status = "disabled";
+			};
 		};
 
 		pinctrl: pinctrl at 44240000 {
-- 
2.53.0




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