[PATCH 1/6] dt-bindings: PCI: qcom-ep: describe optional IOMMU
From: Dmitry Baryshkov
Date: Mon Feb 17 2025 - 13:56:47 EST
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@xxxxxxxxxx>
---
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