linux-kernel - [PATCH] dt-bindings: usb: Clean-up "usb-phy" constraints

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Date: Wed, 24 Jan 2024 13:07:24 -0600
From: Rob Herring <robh@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Xu Yang <xu.yang_2@....com>,
	Peng Fan <peng.fan@....com>
Cc: linux-usb@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: usb: Clean-up "usb-phy" constraints

"usb-phy" has multiple type definitions. Unify the type with the looser
definition, phandle-array, as there are cases with multiple entries
(USB2 and USB3). However, the 'phandle-array' type alone is a bit
ambiguous. It can be either just an array of phandles or an array of
phandles plus args. "usb-phy" is the former and needs to constrain each
entry to a single phandle value.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml | 2 +-
 Documentation/devicetree/bindings/usb/usb.yaml          | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
index b7e664f7395b..3b56e0edb1c6 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
@@ -313,7 +313,7 @@ properties:
 
   usb-phy:
     description: phandle for the PHY device. Use "phys" instead.
-    $ref: /schemas/types.yaml#/definitions/phandle
+    maxItems: 1
     deprecated: true
 
   fsl,usbphy:
diff --git a/Documentation/devicetree/bindings/usb/usb.yaml b/Documentation/devicetree/bindings/usb/usb.yaml
index 326b14f05d1c..1761b7aa92f0 100644
--- a/Documentation/devicetree/bindings/usb/usb.yaml
+++ b/Documentation/devicetree/bindings/usb/usb.yaml
@@ -25,6 +25,8 @@ properties:
 
   usb-phy:
     $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      maxItems: 1
     description:
       List of all the USB PHYs on this HCD to be accepted by the legacy USB
       Physical Layer subsystem.
-- 
2.43.0