Thread (8 messages) read the whole thread 8 messages, 3 authors, 2021-11-23
STALE1710d

Revision v2 of 4 in this series.

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[PATCH v2 1/3] dt-bindings: usb: usb-xhci: Add bindings for usb-skip-phy-init property

From: Sandeep Maheswaram <hidden>
Date: 2021-11-08 06:42:18
Also in: linux-arm-msm, linux-devicetree, lkml
Subsystem: open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman

Adding bindings for usb-skip-phy-init property.
Runtime suspend of phy drivers was failing from DWC3 driver as
runtime usage value is 2 because the phy is initialized from
DWC3 core and HCD core.
Some controllers like DWC3 and CDNS3 manage phy in their core drivers.
This property can be set to avoid phy initialization in HCD core.

Signed-off-by: Sandeep Maheswaram <redacted>
---
 Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
index 965f87f..a64d29f 100644
--- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml
+++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
@@ -25,6 +25,10 @@ properties:
     description: Set if the controller has broken port disable mechanism
     type: boolean
 
+  usb-skip-phy-init:
+    description: Set if the phy initialization is managed by controller
+    type: boolean
+
   imod-interval-ns:
     description: Interrupt moderation interval
     default: 5000
-- 
2.7.4
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