From d27267558fd25acb07d7ff28a7ff44eacf799eaf Mon Sep 17 00:00:00 2001 From: Mukesh Ojha Date: Mon, 5 Jan 2026 18:53:02 +0530 Subject: [PATCH] arm64: dts: qcom: lemans; Add EL2 overlay All the Lemans IOT variants boards are using Gunyah hypervisor which means that, so far, Linux-based OS could only boot in EL1 on those devices. However, it is possible for us to boot Linux at EL2 on these devices [1]. When running under Gunyah, the remote processor firmware IOMMU streams are controlled by Gunyah. However, without Gunyah, the IOMMU is managed by the consumer of this DeviceTree. Therefore, describe the firmware streams for each remote processor. Add a EL2-specific DT overlay and apply it to Lemans IOT variant devices to create -el2.dtb for each of them alongside "normal" dtb. [1] https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-4/boot-developer-touchpoints.html#uefi Signed-off-by: Mukesh Ojha Link: https://lore.kernel.org/r/20260105-kvmrprocv10-v10-14-022e96815380@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- arch/arm64/boot/dts/qcom/Makefile | 10 +++++++ arch/arm64/boot/dts/qcom/lemans-el2.dtso | 35 ++++++++++++++++++++++++ 2 files changed, 45 insertions(+) create mode 100644 arch/arm64/boot/dts/qcom/lemans-el2.dtso diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index a5d6f451f85c0..f80b5d9cf1e80 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -39,6 +39,10 @@ lemans-evk-camera-dtbs := lemans-evk.dtb lemans-evk-camera.dtbo dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-camera-csi1-imx577.dtb dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-camera.dtb + +lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo + +dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-el2.dtb dtb-$(CONFIG_ARCH_QCOM) += milos-fairphone-fp6.dtb dtb-$(CONFIG_ARCH_QCOM) += monaco-evk.dtb dtb-$(CONFIG_ARCH_QCOM) += msm8216-samsung-fortuna3g.dtb @@ -146,6 +150,12 @@ dtb-$(CONFIG_ARCH_QCOM) += qcs8300-ride.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs8550-aim300-aiot.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs9100-ride.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs9100-ride-r3.dtb + +qcs9100-ride-el2-dtbs := qcs9100-ride.dtb lemans-el2.dtbo +qcs9100-ride-r3-el2-dtbs := qcs9100-ride-r3.dtb lemans-el2.dtbo + +dtb-$(CONFIG_ARCH_QCOM) += qcs9100-ride-el2.dtb +dtb-$(CONFIG_ARCH_QCOM) += qcs9100-ride-r3-el2.dtb dtb-$(CONFIG_ARCH_QCOM) += qdu1000-idp.dtb dtb-$(CONFIG_ARCH_QCOM) += qrb2210-arduino-imola.dtb dtb-$(CONFIG_ARCH_QCOM) += qrb2210-rb1.dtb diff --git a/arch/arm64/boot/dts/qcom/lemans-el2.dtso b/arch/arm64/boot/dts/qcom/lemans-el2.dtso new file mode 100644 index 0000000000000..ed615dce6c789 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/lemans-el2.dtso @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +/* + * Lemans specific modifications required to boot in EL2. + */ + +/dts-v1/; +/plugin/; + +&iris { + status = "disabled"; +}; + +&remoteproc_adsp { + iommus = <&apps_smmu 0x3000 0x0>; +}; + +&remoteproc_cdsp0 { + iommus = <&apps_smmu 0x21c0 0x0400>; +}; + +&remoteproc_cdsp1 { + iommus = <&apps_smmu 0x29c0 0x0400>; +}; + +&remoteproc_gpdsp0 { + iommus = <&apps_smmu 0x38a0 0x0>; +}; + +&remoteproc_gpdsp1 { + iommus = <&apps_smmu 0x38c0 0x0>; +}; -- 2.47.3