linux-kernel - [PATCH v5 1/2] dt-bindings: firmware: svc: Add IOMMU support for Agilex5

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <97c7c260544f2e2f1615e494408a608d6c731eea.1762308672.git.khairul.anuar.romli@altera.com>
Date: Wed,  5 Nov 2025 10:28:01 +0800
From: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
To: Dinh Nguyen <dinguyen@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Mahesh Rao <mahesh.rao@...era.com>,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	Adrian Ng Ho Yin <adrianhoyin.ng@...era.com>,
	Niravkumar L Rabara <niravkumarlaxmidas.rabara@...era.com>,
	Khairul Anuar Romli <khairul.anuar.romli@...era.com>
Subject: [PATCH v5 1/2] dt-bindings: firmware: svc: Add IOMMU support for Agilex5

In Agilex5, the TBU (Translation Buffer Unit) can now operate in non-secure
mode, enabling Linux to utilize it through the IOMMU framework. This allows
improved memory management capabilities in non-secure environments. With
Agilex5 lifting this restriction, we are now extending the device tree
bindings to support IOMMU for the Agilex5 SVC.

Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
---
Changes in v5:
	- Use contains enum instead of const
Changes in v4:
	- Fix syntax / style error.
	- Refactor code not to use AllOf but instead use if directly.
Changes in v3:
	- Add iommu property.
	- Add logical check where only Agilex5 required iommus
	- Rewrite the commit message to explain why this changes is 
	  needed.
Changes in v2:
	- Reprase commit message to exclude iommu
---
 .../bindings/firmware/intel,stratix10-svc.yaml     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml b/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
index fac1e955852e..a66aeed0ddee 100644
--- a/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
+++ b/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
@@ -34,6 +34,7 @@ properties:
     enum:
       - intel,stratix10-svc
       - intel,agilex-svc
+      - intel,agilex5-svc
 
   method:
     description: |
@@ -54,6 +55,9 @@ properties:
       reserved memory region for the service layer driver to
       communicate with the secure device manager.
 
+  iommus:
+    maxItems: 1
+
   fpga-mgr:
     $ref: /schemas/fpga/intel,stratix10-soc-fpga-mgr.yaml
     description: Optional child node for fpga manager to perform fabric configuration.
@@ -63,6 +67,16 @@ required:
   - method
   - memory-region
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - intel,agilex5-svc
+then:
+  required:
+    - iommus
+
 additionalProperties: false
 
 examples:
-- 
2.43.7