[PATCH 10/22] arm64: dts: qcom: sm8550: Fix the PCIe iommu-map entries

Manivannan Sadhasivam <[email protected]> Thu, 30 Jul 2026 13:55:51 +0200
Newsgroups org.kernel.feeds.b4-sent,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
The IOMMU provider apps_smmu uses '#iommu-cells = <2>', but the PCIe
iommu-map entries specify only one cell for the SID, omitting the SID
mask. This went unnoticed until the OF core started warning with commit
ccb2fd725d41 ("of: Respect #{iommu,msi}-cells in maps"):

  iommu-map has 1-cell entries targeting 2-cell #iommu-cells, treating as 1-cell output

So fix the entries to match the provider's '#iommu-cells' property.

Fixes: 7d1158c984d3 ("arm64: dts: qcom: sm8550: Add PCIe PHYs and controllers nodes")
Signed-off-by: Manivannan Sadhasivam <[email protected]>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 396201905ef2..69babd26c678 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -2382,8 +2382,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 
 			msi-map = <0x0 &gic_its 0x1400 0x1>,
 				  <0x100 &gic_its 0x1401 0x1>;
-			iommu-map = <0x0   &apps_smmu 0x1400 0x1>,
-				    <0x100 &apps_smmu 0x1401 0x1>;
+			iommu-map = <0x0   &apps_smmu 0x1400 0x0 0x1>,
+				    <0x100 &apps_smmu 0x1401 0x0 0x1>;
 
 			resets = <&gcc GCC_PCIE_0_BCR>;
 			reset-names = "pci";
@@ -2561,8 +2561,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 
 			msi-map = <0x0 &gic_its 0x1480 0x1>,
 				  <0x100 &gic_its 0x1481 0x1>;
-			iommu-map = <0x0   &apps_smmu 0x1480 0x1>,
-				    <0x100 &apps_smmu 0x1481 0x1>;
+			iommu-map = <0x0   &apps_smmu 0x1480 0x0 0x1>,
+				    <0x100 &apps_smmu 0x1481 0x0 0x1>;
 
 			resets = <&gcc GCC_PCIE_1_BCR>,
 				<&gcc GCC_PCIE_1_LINK_DOWN_BCR>;

-- 
2.43.0