linux-kernel - [PATCH 1/6] dt-bindings: PCI: qcom-ep: describe optional IOMMU

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: <20250217-sar2130p-pci-v1-1-94b20ec70a14@linaro.org>
Date: Mon, 17 Feb 2025 20:56:13 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Mrinmay Sarkar <quic_msarkar@...cinc.com>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: Krzysztof Wilczyński <kwilczynski@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/6] dt-bindings: PCI: qcom-ep: describe optional IOMMU

Platforms which use eDMA for PCIe EP transfers (like SA8775P) also use
IOMMU in order to setup transfer windows. Fix the schema in order to
allow specifying the IOMMU.

Fixes: 9d3d5e75f31c ("dt-bindings: PCI: qcom-ep: Add support for SA8775P SoC")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
index 1226ee5d08d1ae909b07b0d78014618c4c74e9a8..800accdf5947e7178ad80f0759cf53111be1a814 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
@@ -75,6 +75,9 @@ properties:
       - const: doorbell
       - const: dma
 
+  iommus:
+    maxItems: 1
+
   reset-gpios:
     description: GPIO used as PERST# input signal
     maxItems: 1
@@ -233,6 +236,20 @@ allOf:
           minItems: 3
           maxItems: 3
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,sdx55-pcie-ep
+    then:
+      properties:
+        iommus:
+          false
+
+    else:
+      required:
+        - iommus
+
 unevaluatedProperties: false
 
 examples:

-- 
2.39.5