[PATCH 1/5] dt-bindings: usb: parade,ps8830: Add parade,disable-usb4 property
From: Jens Glathe via B4 Relay
Date: Sat Jul 18 2026 - 13:08:11 EST
From: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
Document a new optional boolean property "parade,disable-usb4".
When present, the retimer rejects USB4 mode by returning -EOPNOTSUPP,
forcing a fallback to USB3 + DP Alternate Mode.
Assisted-by: Grok(xAI):4.3
Signed-off-by: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/usb/parade,ps8830.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/parade,ps8830.yaml b/Documentation/devicetree/bindings/usb/parade,ps8830.yaml
index eaeab1c01a594..44242907461eb 100644
--- a/Documentation/devicetree/bindings/usb/parade,ps8830.yaml
+++ b/Documentation/devicetree/bindings/usb/parade,ps8830.yaml
@@ -66,6 +66,12 @@ properties:
Sideband Use (SBU) AUX lines endpoint to the Type-C connector for the purpose of
handling altmode muxing and orientation switching.
+ parade,disable-usb4:
+ type: boolean
+ description:
+ When present, the retimer rejects USB4 mode (returns -EOPNOTSUPP).
+ This forces the Type-C stack to fall back to USB3 + DP Alternate Mode.
+
required:
- compatible
- reg
--
2.53.0