[PATCH v5 1/9] dt-bindings: usb: document the Renesas UPD720201/UPD720202 USB 3.0 xHCI Host Controller

Neil Armstrong
2026-02-20T15:04:50Z

Document the Renesas UPD720201/UPD720202 USB 3.0 xHCI Host Controller,
which connects over PCIe and requires specific power supplies to
start up.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
.../bindings/usb/renesas,upd720201-pci.yaml | 61 ++++++++++++++++++++++
1 file changed, 61 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/renesas,upd720201-pci.yaml b/Documentation/devicetree/bindings/usb/renesas,upd720201-pci.yaml
new file mode 100644
index 000000000000..8b8be572c930
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/renesas,upd720201-pci.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/renesas,upd720201-pci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: UPD720201/UPD720202 USB 3.0 xHCI Host Controller (PCIe)
+
+maintainers:
+ - Neil Armstrong <neil.armstrong@linaro.org>
+
+description:
+ UPD720201 USB 3.0 xHCI Host Controller via PCIe x1 Gen2 interface.
+ The UPD720202 supports up to two downstream ports, while UPD720201
+ supports up to four downstream USB 3.0 rev1.0 ports.
+
+properties:
+ compatible:
+ const: pci1912,0014
+
+ reg:
+ maxItems: 1
+
+ avdd33-supply:
+ description: +3.3 V power supply for analog circuit
+
+ vdd10-supply:
+ description: +1.05 V power supply
+
+ vdd33-supply:
+ description: +3.3 V power supply
+
+required:
+ - compatible
+ - reg
+ - avdd33-supply
+ - vdd10-supply
+ - vdd33-supply
+
+allOf:
+ - $ref: usb-xhci.yaml
+
+additionalProperties: true
+
+examples:
+ - |
+ pcie@0 {
+ reg = <0x0 0x1000>;
+ ranges = <0x02000000 0x0 0x100000 0x10000000 0x0 0x0>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ device_type = "pci";
+
+ usb-controller@0 {
+ compatible = "pci1912,0014";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ avdd33-supply = <&avdd33_reg>;
+ vdd10-supply = <&vdd10_reg>;
+ vdd33-supply = <&vdd33_reg>;
+ };
+ };

--
2.34.1