From 428f95f41f3024a8378bb4c4803fe269fcacaa85 Mon Sep 17 00:00:00 2001 From: Nikita Travkin Date: Sat, 3 May 2025 15:39:31 +0500 Subject: [PATCH] arm64: dts: qcom: x1e80100: Add PCIe IOMMU x1e80100 has an SMMUv3 connected to PCIe which is normally controlled by Gunyah and is thus transparent to the OS. However if we boot Linux in EL2, without Gunyah, we need to manage this IOMMU ourselves. To make that easier, and since the hardware actually exists, just not "usually" managed by Linux, describe it in the dts as "reserved". Signed-off-by: Nikita Travkin Link: https://lore.kernel.org/r/20250503-sc-el2-overlays-v2-4-24e9b4572e15@trvn.ru Signed-off-by: Bjorn Andersson --- arch/arm64/boot/dts/qcom/x1e80100.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi index 46b79fce92c9..7a3e75294be5 100644 --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi @@ -7940,6 +7940,20 @@ dma-coherent; }; + pcie_smmu: iommu@15400000 { + compatible = "arm,smmu-v3"; + reg = <0 0x15400000 0 0x80000>; + #iommu-cells = <1>; + interrupts = , + , + ; + interrupt-names = "eventq", + "gerror", + "cmdq-sync"; + dma-coherent; + status = "reserved"; /* Controlled by Gunyah. */ + }; + intc: interrupt-controller@17000000 { compatible = "arm,gic-v3"; reg = <0 0x17000000 0 0x10000>, /* GICD */ -- 2.50.1