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title: "PCIe: handle suspend problem"
team: IO
key: 61128a40-edce-11ea-90d7-7f8bdf62ff21
status: Active
assignee: Marek
bsp41x:
- 6c3a8adfec10cb6f4efa88e5dc58cd8ea34420ac # PCI: pcie-rcar: Add the suspend/resume for pcie-rcar driver
- 3283eefba71ffd708c53048e4187dcdbc8638fb3 # PCI: pcie-rcar: Support runtime PM, link state L1 handling
upstream:
comments:
- "PCIe suspend causes an exception which needs to be handled"
- "For Gen3, a fix was made for ATF: https://github.com/ARM-software/arm-trusted-firmware/commit/0969397f295621aa26b3d14b76dd397d22be58bf"
- "For Gen2, a similar approach needs to be taken with hooks for Linux exception handling"
- "v1: https://patchwork.kernel.org/patch/11772083/"
- "v2: https://patchwork.kernel.org/patch/11801531/"
- "v3: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20201011160045.574323-1-marek.vasut@gmail.com/"
- "v4: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20201016120416.7008-1-marek.vasut@gmail.com/"
- "on-going disucssion with PCI maintainers"
- "after more discussion, PCI maintainers suggest to drop L1 entirely"
- "Marek is busy currently but has not forgotten about it"
- "v5: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20210411185030.8818-1-marek.vasut@gmail.com/"
- "v6: https://patchwork.kernel.org/project/linux-renesas-soc/patch/20210514200549.431275-1-marek.vasut@gmail.com/"
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