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
