** Description changed: Impact: Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: ... [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA [hangs here] Fix: During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't - take into accout clocks and power requirements - reverting the upstream - patch, and reapplying the qcom one fixes this hangs. + explicit clocks, power requirements and early init via + IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the + original qcom one fixes this hangs. How to test: Try to boot a patched kernel and see if it reaches userspace. Regression potential: None, since the current kernel version doesn't boot at all.
** Description changed: Impact: Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: ... [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA [hangs here] Fix: During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't explicit clocks, power requirements and early init via IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the - original qcom one fixes this hangs. + original qcom patch that was dropped, fixes this hang. How to test: Try to boot a patched kernel and see if it reaches userspace. Regression potential: None, since the current kernel version doesn't boot at all. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-snapdragon in Ubuntu. https://bugs.launchpad.net/bugs/1841893 Title: Dragonboard fails to boot: hangs after SMMU init Status in linux-snapdragon package in Ubuntu: New Bug description: Impact: Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: ... [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA [hangs here] Fix: During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't explicit clocks, power requirements and early init via IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the original qcom patch that was dropped, fixes this hang. How to test: Try to boot a patched kernel and see if it reaches userspace. Regression potential: None, since the current kernel version doesn't boot at all. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-snapdragon/+bug/1841893/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
