[PATCH v1 1/6] dt-bindings: usb: ci-hdrc-usb2: 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 at gmail.com>
---
 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
index 691d6cf02c27..a13c1ef49a57 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
@@ -75,6 +75,13 @@ properties:
     type: boolean
     deprecated: true
 
+  nvidia,external-control:
+    description:
+      Indicates that the controller is configured externally and that the host
+      should not attempt to touch it. Usually used by a modem which requires
+      precise bus configuration.
+    type: boolean
+
   ulpi:
     type: object
     additionalProperties: false
-- 
2.51.0