linux-kernel - [PATCH v2 1/7] dt-bindings: usb: document the Renesas UPD720201/UPD720202 USB 3.0 xHCI Host Controller

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Message-Id: <20260127-topic-sm8650-ayaneo-pocket-s2-base-v2-1-c55ec1b5d8bf@linaro.org>
Date: Tue, 27 Jan 2026 10:57:28 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Rob Clark <robin.clark@....qualcomm.com>, 
 Dmitry Baryshkov <lumag@...nel.org>, 
 Abhinav Kumar <abhinav.kumar@...ux.dev>, 
 Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>, Bartosz Golaszewski <brgl@...nel.org>, 
 Manivannan Sadhasivam <mani@...nel.org>, 
 Bjorn Helgaas <bhelgaas@...gle.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-usb@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, linux-pci@...r.kernel.org, 
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v2 1/7] dt-bindings: usb: document the Renesas
 UPD720201/UPD720202 USB 3.0 xHCI Host Controller

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

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 .../bindings/usb/renesas,upd720201-pci.yaml        | 55 ++++++++++++++++++++++
 1 file changed, 55 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..df3cdcf44747
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/renesas,upd720201-pci.yaml
@@ -0,0 +1,55 @@
+# 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@...aro.org>
+
+description:
+  UPD720201 USB 3.0 xHCI Host Controller via PCIe x1 Gen2 interface.
+  The UPD720202 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
+
+allOf:
+  - $ref: usb-xhci.yaml
+
+additionalProperties: false
+
+examples:
+  - |
+    pcie@0 {
+        reg = <0x0 0x1000>;
+        ranges = <0x02000000 0x0 0x100000 0x10000000 0x0 0x0>;
+        #address-cells = <3>;
+        #size-cells = <2>;
+        device_type = "pci";
+
+        usb@0 {
+            compatible = "pci1912,0014";
+            reg = <0x0 0x0 0x0 0x0 0x0>;
+        };
+    };

-- 
2.34.1