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dt-bindings: usb: Document qcom,force-gen1

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Add description for the newly added qcom,force-gen1 property.

Change-Id: I44f9a13679418186d24a620f859433c7d2dfde93
This commit is contained in:
Ajay Agarwal
2022-03-07 18:22:13 +05:30
parent 6ce1f2837b
commit d4c3857e03
1 changed files with 4 additions and 0 deletions
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bindings/usb/msm-ssusb.txt
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@@ -97,6 +97,10 @@ Optional properties :
capable DWC3 which does not have extcon handle.
- qcom,usb-charger: If present, phandle to device node associated with charger
device that handles battery charging on this USB port.
- qcom,force-gen1: If present, limit the speed of Gen2 link to Gen1. The other method of limiting
speed using "maximum-speed=super-speed" works only for device mode because we set speed to
DWC3_DCFG_SUPERSPEED in DCFG register. It does not change anything for host mode and
connected peripherals might still get enumerated in SSP.
Sub nodes:
- Sub node for "DWC3- USB3 controller".