[PATCH 1/2] dt-bindings: usb: dwc3: Document role-switch-reset-quirk

[Sven Peter]

The dwc3 controller on the Apple M1 must be reset whenever a
device is unplugged from the root port and triggers a role
switch notification. Document the quirk to enable this behavior.

Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 25ac2c93dc6c..9635e20cab68 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -226,6 +226,12 @@ properties:
       avoid -EPROTO errors with usbhid on some devices (Hikey 970).
     type: boolean
 
+  snps,role-switch-reset-quirk:
+    description:
+      When set, DWC3 will be reset and reinitialized whenever a role switch
+      is performed.
+    type: boolean
+
   snps,is-utmi-l1-suspend:
     description:
       True when DWC3 asserts output signal utmi_l1_suspend_n, false when
-- 
2.25.1