linux-kernel - [PATCH 2/4] dt-bindings: usb: dwc2: add iommus

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Date:   Fri, 18 Feb 2022 17:15:20 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Dinh Nguyen <dinguyen@...nel.org>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] dt-bindings: usb: dwc2: add iommus

The DWC2 node might use IOMMU (e.g. Altera Stratix10), so add "iommus"
property.  This fixes warnings like:

  arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dt.yaml:
    usb@...40000: 'iommus' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 Documentation/devicetree/bindings/usb/dwc2.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc2.yaml b/Documentation/devicetree/bindings/usb/dwc2.yaml
index 048e352c531a..1ba96706bbcb 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.yaml
+++ b/Documentation/devicetree/bindings/usb/dwc2.yaml
@@ -68,6 +68,9 @@ properties:
     items:
       - const: otg
 
+  iommus:
+    maxItems: 1
+
   resets:
     items:
       - description: common reset
-- 
2.32.0