linux-kernel - [PATCH RFC 01/22] dt-bindings: usb: snps,dwc3: Allow multiple iommus

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Message-Id: <20250821-atcphy-6-17-v1-1-172beda182b8@kernel.org>
Date: Thu, 21 Aug 2025 15:38:53 +0000
From: Sven Peter <sven@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Felipe Balbi <balbi@...nel.org>, 
 Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>, Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>, 
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, asahi@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org, 
 Sven Peter <sven@...nel.org>
Subject: [PATCH RFC 01/22] dt-bindings: usb: snps,dwc3: Allow multiple
 iommus

Apple's dwc3 variant requires two iommus.

Signed-off-by: Sven Peter <sven@...nel.org>
---
 Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 4380bb6fa2f08a475b557e80467abc2861f622e2..6d35dcc605c01977f4fc6fdb6f12976f1cef2b9e 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -60,7 +60,7 @@ properties:
   dma-coherent: true
 
   iommus:
-    maxItems: 1
+    maxItems: 2
 
   power-domains:
     description:

-- 
2.34.1