FROMGIT: arm64: dts: qcom: hamoa: Enable EL2 and remoteproc#449
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LXQUALCOMM wants to merge 4 commits intoqualcomm-linux:qcom-6.18.yfrom
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FROMGIT: arm64: dts: qcom: hamoa: Enable EL2 and remoteproc#449LXQUALCOMM wants to merge 4 commits intoqualcomm-linux:qcom-6.18.yfrom
LXQUALCOMM wants to merge 4 commits intoqualcomm-linux:qcom-6.18.yfrom
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… trees All the existing variants Hamoa 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 remoteproc IOMMUS to the EL2 device trees to generate the corresponding -el2.dtb files. [1] https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-4/boot-developer-touchpoints.html#uefi Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com> Signed-off-by: Xin Liu <xin.liu@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260203063244.1498699-1-xin.liu@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Document the compatible for the X1E80100 platform to the Qualcomm watchdog binding. The HW implementation is compatible with the KPSS WDT. Acked-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251224-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v3-1-1801c55d2883@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Xin Liu <xin.liu@oss.qualcomm.com>
The watchdog support in EL1 is SBSA compliant, handled by Gunyah hypervisor, but in EL2. the watchdog is an instance of the APSS WDT HW block, same as older platforms. So describe the APSS WDT node and mark it as reserved, as it will only be enabled in EL2 overlay. Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251224-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v3-2-1801c55d2883@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Xin Liu <xin.liu@oss.qualcomm.com>
In EL2, the APSS watchdog is available. So enable it in the overlay. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251224-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v3-3-1801c55d2883@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Xin Liu <xin.liu@oss.qualcomm.com>
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Apr 11, 2026
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enable EL2 and EL2 remoteproc
CRs-Fixed: 4495965