[PATCH 3/8] arm64: tegra: Enable XUSB host function on Jetson AGX Thor
From: Wayne Chang
Date: Mon Jun 29 2026 - 05:57:46 EST
This commit enables XUSB host and pad controller on Jetson AGX Thor.
Signed-off-by: Wayne Chang <waynec@xxxxxxxxxx>
---
.../arm64/boot/dts/nvidia/tegra264-p3834.dtsi | 50 ++++++
.../dts/nvidia/tegra264-p4071-0000+p3834.dtsi | 95 +++++++++++
arch/arm64/boot/dts/nvidia/tegra264.dtsi | 154 ++++++++++++++++++
3 files changed, 299 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi b/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
index 7e2c3e66c2ab..61802334452e 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
@@ -35,4 +35,54 @@ cmdqv@6200000 {
status = "okay";
};
};
+
+ bus@a800000000 {
+ padctl@8680000 {
+ vclamp-usb-supply = <&vdd_ao_1v8>;
+ avdd-usb-supply = <&vdd_ao_3v3>;
+
+ ports {
+ usb2-0 {
+ vbus-supply = <&vdd_5v0_sys>;
+ };
+
+ usb2-1 {
+ vbus-supply = <&vdd_5v0_sys>;
+ };
+
+ usb2-2 {
+ vbus-supply = <&vdd_5v0_sys>;
+ };
+
+ usb2-3 {
+ vbus-supply = <&vdd_5v0_sys>;
+ };
+ };
+ };
+ };
+
+ vdd_5v0_sys: regulator-vdd-5v0-sys {
+ compatible = "regulator-fixed";
+ regulator-name = "VIN_SYS_5V0";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vdd_ao_1v8: regulator-vdd-1v8-ao {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd-AO-1v8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ };
+
+ vdd_ao_3v3: regulator-vdd-3v3-ao {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd-AO-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
};
diff --git a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
index 45f8df9bbfd6..9d6d0c31f881 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
@@ -9,4 +9,99 @@ aliases {
chosen {
stdout-path = "serial0:115200n8";
};
+
+ bus@a800000000 {
+ padctl@8680000 {
+ status = "okay";
+
+ pads {
+ usb2 {
+ lanes {
+ usb2-0 {
+ status = "okay";
+ };
+
+ usb2-1 {
+ status = "okay";
+ };
+
+ usb2-2 {
+ status = "okay";
+ };
+
+ usb2-3 {
+ status = "okay";
+ };
+ };
+ };
+
+ usb3 {
+ lanes {
+ usb3-0 {
+ status = "okay";
+ };
+
+ usb3-1 {
+ status = "okay";
+ };
+
+ usb3-2 {
+ status = "okay";
+ };
+ };
+ };
+ };
+
+ ports {
+ usb2-0 {
+ mode = "host";
+ status = "okay";
+ };
+
+ usb2-1 {
+ mode = "host";
+ status = "okay";
+ };
+
+ usb2-2 {
+ mode = "host";
+ status = "okay";
+ };
+
+ usb2-3 {
+ mode = "host";
+ status = "okay";
+ };
+
+ usb3-0 {
+ nvidia,usb2-companion = <1>;
+ status = "okay";
+ };
+
+ usb3-1 {
+ nvidia,usb2-companion = <0>;
+ status = "okay";
+ };
+
+ usb3-2 {
+ nvidia,usb2-companion = <3>;
+ status = "okay";
+ };
+ };
+ };
+
+ usb@aa10000 {
+ status = "okay";
+
+ phys = <&{/bus@a800000000/padctl@8680000/pads/usb2/lanes/usb2-0}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb2/lanes/usb2-1}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb2/lanes/usb2-2}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb2/lanes/usb2-3}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb3/lanes/usb3-0}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb3/lanes/usb3-1}>,
+ <&{/bus@a800000000/padctl@8680000/pads/usb3/lanes/usb3-2}>;
+ phy-names = "usb2-0", "usb2-1", "usb2-2", "usb2-3",
+ "usb3-0", "usb3-1", "usb3-2";
+ };
+ };
};
diff --git a/arch/arm64/boot/dts/nvidia/tegra264.dtsi b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
index 2d8e7e37830f..3433587dc572 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264.dtsi
@@ -4049,6 +4049,160 @@ pci@8480000 {
nvidia,bpmp = <&bpmp 5>;
status = "disabled";
};
+
+ xusb_padctl: padctl@8680000 {
+ compatible = "nvidia,tegra264-xusb-padctl";
+ reg = <0x00 0x8680000 0x00 0x20000>,
+ <0x00 0x86a0000 0x00 0x10000>;
+ reg-names = "padctl", "ao";
+ interrupts = <GIC_SPI 4101 IRQ_TYPE_LEVEL_HIGH>;
+
+ resets = <&bpmp TEGRA264_RESET_XUSB1_PADCTL>;
+ reset-names = "padctl";
+
+ status = "disabled";
+
+ pads {
+ usb2 {
+ lanes {
+ usb2-0 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb2-1 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb2-2 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb2-3 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+ };
+ };
+
+ usb3 {
+ lanes {
+ usb3-0 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb3-1 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb3-2 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+
+ usb3-3 {
+ nvidia,function = "xusb";
+ status = "disabled";
+ #phy-cells = <0>;
+ };
+ };
+ };
+ };
+
+ ports {
+ usb2-0 {
+ status = "disabled";
+ };
+
+ usb2-1 {
+ status = "disabled";
+ };
+
+ usb2-2 {
+ status = "disabled";
+ };
+
+ usb2-3 {
+ status = "disabled";
+ };
+
+ usb3-0 {
+ status = "disabled";
+ };
+
+ usb3-1 {
+ status = "disabled";
+ };
+
+ usb3-2 {
+ status = "disabled";
+ };
+
+ usb3-3 {
+ status = "disabled";
+ };
+ };
+ };
+
+ usb@aa10000 {
+ compatible = "nvidia,tegra264-xusb";
+ reg = <0x00 0xaa10000 0x00 0x40000>,
+ <0x00 0xaa00000 0x00 0x10000>,
+ <0x00 0xaa50000 0x00 0x10000>;
+ reg-names = "hcd", "fpci", "bar2";
+
+ interrupts-extended = <&gic GIC_SPI 952 IRQ_TYPE_LEVEL_HIGH>,
+ <&gic GIC_SPI 4096 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 79 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 80 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 81 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 82 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 83 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 84 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 85 IRQ_TYPE_LEVEL_HIGH>,
+ <&pmc 86 IRQ_TYPE_LEVEL_HIGH>;
+
+ clocks = <&bpmp TEGRA264_CLK_XUSB1_CORE_HOST>,
+ <&bpmp TEGRA264_CLK_XUSB1_FALCON>,
+ <&bpmp TEGRA264_CLK_XUSB1_CORE_SUPERSPEED>,
+ <&bpmp TEGRA264_CLK_XUSB1_SS>,
+ <&bpmp TEGRA264_CLK_OSC>,
+ <&bpmp TEGRA264_CLK_XUSB1_FS>,
+ <&bpmp TEGRA264_CLK_UTMI_PLL1>,
+ <&bpmp TEGRA264_CLK_OSC>,
+ <&bpmp TEGRA264_CLK_PLLE0>;
+ clock-names = "xusb_host", "xusb_falcon_src",
+ "xusb_ss", "xusb_ss_src", "xusb_hs_src",
+ "xusb_fs_src", "pll_u_480m", "clk_m",
+ "pll_e";
+ interconnects = <&mc TEGRA264_MEMORY_CLIENT_XUSB_DEVR &emc>,
+ <&mc TEGRA264_MEMORY_CLIENT_XUSB_DEVW &emc>;
+ interconnect-names = "dma-mem", "write";
+ iommus = <&smmu1 TEGRA264_SID_XUSB_DEV>,
+ <&smmu1 TEGRA264_SID_XUSB_DEV1>,
+ <&smmu1 TEGRA264_SID_XUSB_DEV2>,
+ <&smmu1 TEGRA264_SID_XUSB_DEV3>,
+ <&smmu1 TEGRA264_SID_XUSB_DEV4>;
+
+ power-domains = <&bpmp TEGRA264_POWER_DOMAIN_XUSB_HOST>,
+ <&bpmp TEGRA264_POWER_DOMAIN_XUSB_SS>;
+ power-domain-names = "xusb_host", "xusb_ss";
+
+ nvidia,xusb-padctl = <&xusb_padctl>;
+ dma-coherent;
+ status = "disabled";
+ };
};
cpus {
--
2.25.1