[PATCH v2 2/4] dt-bindings: usb: chipidea,usb2-tegra: Document nvidia,external-control property

[Svyatoslav Ryhel]

Document the nvidia,external-control property required, for example, for
USB lines in HSIC mode connected to a modem, where the modem requires
precise control over the USB bus to properly enumerate all its stages and
intermediate devices.

Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
---
 .../devicetree/bindings/usb/chipidea,usb2-tegra.yaml       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml b/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml
index 78046f8a63ad..d99a18900b5a 100644
--- a/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml
+++ b/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml
@@ -40,6 +40,13 @@ properties:
     type: boolean
     deprecated: true
 
+  nvidia,external-control:
+    description:
+      Indicates that the controller is configured externally and that the host
+      should not attempt to access it. This is usually used by a modem that
+      requires precise bus configuration.
+    type: boolean
+
 required:
   - compatible
   - reg
-- 
2.51.0