[PATCH 1/2] dt-bindings: usb: hcd: Add downstream USB ports

[Chen-Yu Tsai]

Besides hard-wired downstream USB devices, a USB HCD's downstream ports
can also connect to USB connector nodes via OF graph, just like with a
USB hub.

Allow a "ports" child node and describe the possible downstream port
nodes. USB downstream port numbers start at 1.

Also fix up the address portion of hard-wired downstream USB devices to
match.

Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
---
 Documentation/devicetree/bindings/usb/usb-hcd.yaml | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/usb-hcd.yaml b/Documentation/devicetree/bindings/usb/usb-hcd.yaml
index 45a19d4928af..24df99dfb243 100644
--- a/Documentation/devicetree/bindings/usb/usb-hcd.yaml
+++ b/Documentation/devicetree/bindings/usb/usb-hcd.yaml
@@ -29,8 +29,16 @@ properties:
   "#size-cells":
     const: 0
 
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    description: The downstream facing USB ports
+
+    patternProperties:
+      "^port@[1-9a-f][0-9a-f]?$":
+        $ref: /schemas/graph.yaml#/properties/port
+
 patternProperties:
-  "^.*@[0-9a-f]{1,2}$":
+  "^.*@[1-9a-f][0-9a-f]?$":
     description: The hard wired USB devices
     type: object
     $ref: /schemas/usb/usb-device.yaml
-- 
2.56.0.212.g129ede20d9-goog