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charset="utf-8" Add a binding for the Altera Agilex5 SoC integration of the Synopsys DWC3 USB controller (compatible "altr,agilex5-dwc3"), covering clocks, resets, PHYs, and optional IOMMU support. Clock names follow the snps,dwc3.yaml example order (bus_early, ref, suspend). Reset names use core/ecc. On this SoC ref and suspend are the same hardware source, so the example reuses AGILEX5_USB31_SUSPEND_CLK. Signed-off-by: Adrian Ng Ho Yin --- .../bindings/usb/altr,agilex5-dwc3.yaml | 108 ++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/altr,agilex5-dwc3= .yaml diff --git a/Documentation/devicetree/bindings/usb/altr,agilex5-dwc3.yaml b= /Documentation/devicetree/bindings/usb/altr,agilex5-dwc3.yaml new file mode 100644 index 000000000000..9970d7c9d6fa --- /dev/null +++ b/Documentation/devicetree/bindings/usb/altr,agilex5-dwc3.yaml @@ -0,0 +1,108 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/altr,agilex5-dwc3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Altera Agilex5 DWC3 USB SoC Controller + +maintainers: + - Adrian Ng Ho Yin + +description: + The Altera Agilex5 SoCFPGA integrates a Synopsys DesignWare USB3 (DWC3) + controller that supports host, device and DRD modes. + +allOf: + - $ref: snps,dwc3-common.yaml# + +properties: + compatible: + const: altr,agilex5-dwc3 + + reg: + maxItems: 1 + + clocks: + items: + - description: Master/Core bus clock + - description: Controller reference clock + - description: Controller suspend clock + + clock-names: + items: + - const: bus_early + - const: ref + - const: suspend + + interrupts: + maxItems: 1 + + phys: + minItems: 2 + maxItems: 2 + + phy-names: + items: + - const: usb2-phy + - const: usb3-phy + + iommus: + maxItems: 1 + + resets: + items: + - description: DWC3 core reset + - description: DWC3 ECC reset + + reset-names: + items: + - const: core + - const: ecc + + dr_mode: true + + maximum-speed: true + + snps,dis_u2_susphy_quirk: true + + snps,dis_u3_susphy_quirk: true + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - phys + - phy-names + - resets + - reset-names + +additionalProperties: false + +examples: + - | + #include + #include + #include + + soc { + #address-cells =3D <1>; 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charset="utf-8" Add a DTS node for the Synopsys DWC3 USB3.1 controller on the Agilex5 SoC. Place it under a simple-bus with a 40-bit dma-ranges window (#address-cells =3D 2) to match the USB DMA address width of the interconnect. Enable it in host mode on the SoCDK board. ref and suspend both use AGILEX5_USB31_SUSPEND_CLK because they share the same hardware clock source on this SoC. Signed-off-by: Adrian Ng Ho Yin --- .../arm64/boot/dts/intel/socfpga_agilex5.dtsi | 35 +++++++++++++++++++ .../boot/dts/intel/socfpga_agilex5_socdk.dts | 5 +++ 2 files changed, 40 insertions(+) diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/bo= ot/dts/intel/socfpga_agilex5.dtsi index f54767d1526e..523f722a2a64 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi @@ -493,6 +493,41 @@ usb0: usb@10b00000 { status =3D "disabled"; }; =20 + usb31_bus: usb-bus@11000000 { + compatible =3D "simple-bus"; + #address-cells =3D <2>; + #size-cells =3D <2>; + ranges =3D <0x0 0x0 0x11000000 0x0 0x100000>; + /* + * USB interconnect DMA is limited to 40-bit addresses + * (1 TiB window from 0). + */ + dma-ranges =3D <0x0 0x0 0x0 0x100 0x0>; + + usb31: usb@0 { + compatible =3D "altr,agilex5-dwc3"; + reg =3D <0x0 0x0 0x0 0x100000>; + interrupts =3D ; + /* + * ref and suspend share the same hardware + * source; reuse the published suspend clock ID. + */ + clocks =3D <&clkmgr AGILEX5_USB31_BUS_CLK_EARLY>, + <&clkmgr AGILEX5_USB31_SUSPEND_CLK>, + <&clkmgr AGILEX5_USB31_SUSPEND_CLK>; + clock-names =3D "bus_early", "ref", "suspend"; + resets =3D <&rst USB1_RESET>, <&rst USB1_OCP_RESET>; + reset-names =3D "core", "ecc"; + iommus =3D <&smmu 7>; + phys =3D <&usbphy0>, <&usbphy0>; + phy-names =3D "usb2-phy", "usb3-phy"; + maximum-speed =3D "super-speed"; + snps,dis_u2_susphy_quirk; + snps,dis_u3_susphy_quirk; + status =3D "disabled"; + }; + }; + watchdog0: watchdog@10d00200 { compatible =3D "snps,dw-wdt"; reg =3D <0x10d00200 0x100>; diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts b/arch/arm= 64/boot/dts/intel/socfpga_agilex5_socdk.dts index 1e9b87d96765..aa9294494421 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts @@ -109,6 +109,11 @@ &usb0 { disable-over-current; }; =20 +&usb31 { + dr_mode =3D "host"; + status =3D "okay"; +}; + &watchdog0 { status =3D "okay"; }; --=20 2.49.GIT From nobody Fri Sep 25 23:48:37 2026 Received: from SN4PR0501CU005.outbound.protection.outlook.com (mail-southcentralusazon11011063.outbound.protection.outlook.com [40.93.194.63]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15A544432F6; 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charset="utf-8" The Agilex5 SoCDK daughter card only provides a USB3.1 interface (USB1). USB0 is not connected or used on this board. Remove the USB0 node to avoid unnecessary initialization and potential resource conflicts. Signed-off-by: Adrian Ng Ho Yin --- arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts b/arch/arm= 64/boot/dts/intel/socfpga_agilex5_socdk.dts index aa9294494421..c48867cc3043 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts @@ -104,11 +104,6 @@ &uart0 { status =3D "okay"; }; =20 -&usb0 { - status =3D "okay"; - disable-over-current; -}; - &usb31 { dr_mode =3D "host"; status =3D "okay"; --=20 2.49.GIT From nobody Fri Sep 25 23:48:37 2026 Received: from SN4PR0501CU005.outbound.protection.outlook.com (mail-southcentralusazon11011063.outbound.protection.outlook.com [40.93.194.63]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EAE6445AC4; Mon, 7 Sep 2026 08:29:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" Add the "altr,agilex5-dwc3" compatible string to dwc3-generic-plat so the Agilex5 USB3.1 DWC3 controller can probe through the generic DWC3 platform glue. Signed-off-by: Adrian Ng Ho Yin Acked-by: Thinh Nguyen --- drivers/usb/dwc3/dwc3-generic-plat.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc3/dwc3-generic-plat.c b/drivers/usb/dwc3/dwc3-g= eneric-plat.c index ca69ac0eb07c..8781d7ec6b9e 100644 --- a/drivers/usb/dwc3/dwc3-generic-plat.c +++ b/drivers/usb/dwc3/dwc3-generic-plat.c @@ -232,6 +232,7 @@ static const struct dwc3_generic_config eic7700_dwc3 = =3D { }; =20 static const struct of_device_id dwc3_generic_of_match[] =3D { + { .compatible =3D "altr,agilex5-dwc3", }, { .compatible =3D "spacemit,k1-dwc3", &spacemit_k1_dwc3}, { .compatible =3D "spacemit,k3-dwc3", }, { .compatible =3D "fsl,ls1028a-dwc3", &fsl_ls1028_dwc3}, --=20 2.49.GIT