[PATCH v3 8/9] arm64: dts: st: Add USB nodes on stm32mp231

From: Marek Vasut

Date: Sat Aug 22 2026 - 03:51:57 EST


Add USB controller and PHY nodes to stm32mp231 DT.
This includes two USB 2.0 FEMTO PHYs, USB 2.0 host
controller and DWC3 DRD controller nodes.

Co-developed-by: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Co-developed-by: Francois Choleau <francois.choleau@xxxxxx>
Signed-off-by: Francois Choleau <francois.choleau@xxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxxxxxxx>
---
Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Cc: Christian Bruel <christian.bruel@xxxxxxxxxxx>
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Fabrice Gasnier <fabrice.gasnier@xxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Cc: Pankaj Dev <pankaj.dev@xxxxxx>
Cc: Rahul Kumar <rahul.kumar05@xxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Rosen Penev <rosenp@xxxxxxxxx>
Cc: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Cc: Vinod Koul <vkoul@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: kernel@xxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-phy@xxxxxxxxxxxxxxxxxxx
Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-usb@xxxxxxxxxxxxxxx
---
V2: - Fix up Sob/Cdb lines
- Move PHY into syscfg subnode
- Turn st,stm32mp23-syscfg into simple-mfd
- Use clock-cells = <1> to discern OSC and future PLL clock from the PHY
V3: - Drop combophy which is not present on MP23
- Describe OHCI clock as the CMN clock
---
arch/arm64/boot/dts/st/stm32mp231.dtsi | 67 +++++++++++++++++++++++++-
1 file changed, 66 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/st/stm32mp231.dtsi b/arch/arm64/boot/dts/st/stm32mp231.dtsi
index 4505fc0e3b537..314a514f31024 100644
--- a/arch/arm64/boot/dts/st/stm32mp231.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp231.dtsi
@@ -7,6 +7,7 @@
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/regulator/st,stm32mp25-regulator.h>
#include <dt-bindings/reset/st,stm32mp25-rcc.h>
+#include <dt-bindings/phy/phy.h>

/ {
#address-cells = <2>;
@@ -862,6 +863,48 @@ stmmac_axi_config_1: stmmac-axi-config {
snps,wr_osr_lmt = <0x7>;
};
};
+
+ usbh_ohci: usb@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@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@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>;
+ maximum-speed = "high-speed";
+ phys = <&usb2_phy2>;
+ phy-names = "usb2-phy";
+ resets = <&rcc USB3DR_R>;
+ st,syscfg = <&syscfg 0x4800>;
+ status = "disabled";
+ };
};

bsec: efuse@44000000 {
@@ -1062,9 +1105,31 @@ exti1: interrupt-controller@44220000 {
};

syscfg: syscon@44230000 {
- compatible = "st,stm32mp23-syscfg", "syscon";
+ compatible = "st,stm32mp23-syscfg", "syscon", "simple-mfd";
reg = <0x44230000 0x10000>;
#clock-cells = <0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ usb2_phy1: phy@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@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@44240000 {
--
2.53.0