linux-kernel - [PATCH] dt-bindings: ata: snps,dwc-ahci: Allow 'iommus' property

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Message-ID: <20251022230422.423230-1-robh@kernel.org>
Date: Wed, 22 Oct 2025 18:04:21 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Damien Le Moal <dlemoal@...nel.org>,
	Niklas Cassel <cassel@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Serge Semin <fancer.lancer@...il.com>
Cc: linux-ide@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: ata: snps,dwc-ahci: Allow 'iommus' property

The AMD Seattle DWC AHCI is behind an IOMMU and has 1-3 entries, so add
the 'iommus' property. There's not a specific compatible, so we can't
limit it to Seattle.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml b/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
index 4c848fcb5a5d..7707cbed2260 100644
--- a/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
+++ b/Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
@@ -33,6 +33,10 @@ properties:
       - description: SPEAr1340 AHCI SATA device
         const: snps,spear-ahci
 
+  iommus:
+    minItems: 1
+    maxItems: 3
+
 patternProperties:
   "^sata-port@[0-9a-e]$":
     $ref: /schemas/ata/snps,dwc-ahci-common.yaml#/$defs/dwc-ahci-port
-- 
2.51.0