[PATCH v1 1/2] dt-bindings: musb: mpfs: add ULPI external vbus support

[Conor Dooley]

Add a property to allow configuring the musb controller on PolarFire SoC
to use an external vbus for ULPI PHYs.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
 .../devicetree/bindings/usb/microchip,mpfs-musb.yaml       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
index c5e9ce2e7bc2a..27b909de49922 100644
--- a/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
+++ b/Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
@@ -34,6 +34,13 @@ properties:
   clocks:
     maxItems: 1
 
+  microchip,ext-vbus-drv:
+    description:
+      Some ULPI USB PHYs do not support an internal VBUS supply and driving
+      the CPEN pin requires the configuration of the UPLI_USE__EXTVBUS
+      bit in ULPI_BUSCONTROL.
+    $ref: /schemas/types.yaml#/definitions/flag
+
 required:
   - compatible
   - reg
-- 
2.43.2