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I got a problem when initializing the I210 in SDK4， it **never link up** at most time， but it succeed 100% in SDK8,
in kernel /drivers/pci/dwc/pci-dra7xx.c ,dra7xx_pcie_establish_link .
There are any ideas to fix the bug if I insist to use the kernel SDK4 ? obviously I know it is the good one to update to SDK8
SDK8:Linux 5.10.100-1.0.1 #151 SMP PREEMPT IRQPIPE Wed Nov 13 16:03:16 CST 2024 armv7l armv7l armv7l GNU/Linux
SDK4:Linux 4.9.41+ #27 SMP PREEMPT Wed Jun 14 17:58:54 CST 2023 armv7l GNU/Linux
sdk8 link OK 正常识别芯片 [4.237518] dra7-pcie 51000000.pcie: GPIO lookup for consumer (null) [4.237548] dra7-pcie 51000000.pcie: using device tree for GPIO lookup [4.237731] dra7-pcie 51000000.pcie: host bridge /ocp/axi@0/pcie@51000000 ranges: [4.237792] dra7-pcie 51000000.pcie:IO 0x0020003000..0x0020012fff -> 0x0000000000 [4.237823] dra7-pcie 51000000.pcie:MEM 0x0020013000..0x002fffffff -> 0x0020013000 [4.237915] dra7-pcie 51000000.pcie: Reset pcie device [4.754364] dra7-pcie 51000000.pcie: Link up [4.754486] dra7-pcie 51000000.pcie: PCI host bridge to bus 0000:00 SDK4 link ok正常识别芯片 [0.496820] dra7-pcie 51000000.pcie: Linked as a consumer to phy-4a094000.pciephy.3 [0.497037] dra7-pcie 51000000.pcie: GPIO lookup for consumer (null) [0.497046] dra7-pcie 51000000.pcie: using device tree for GPIO lookup [0.642013] dra7-pcie 51000000.pcie: link up [0.642213] dra7-pcie 51000000.pcie: PCI host bridge to bus 0000:00 SDK4 link failed未识别到芯片 [0.497903] dra7-pcie 51000000.pcie: Linked as a consumer to phy-4a094000.pciephy.3 [0.498121] dra7-pcie 51000000.pcie: GPIO lookup for consumer (null) [0.498129] dra7-pcie 51000000.pcie: using device tree for GPIO lookup [1.543369] dra7-pcie 51000000.pcie: phy link never came up [1.543570] dra7-pcie 51000000.pcie: PCI host bridge to bus 0000:00
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Taylor：
您好，
已经收到了您的案例，调查需要些时间，感谢您的耐心等待。
,
chengjie zhao：
请问现在进度到哪一步了呢？
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Links：
您询问的此SDK处于原样状态，我们无法支持您使其正常工作。
请浏览论坛，寻找任何可能有帮助的线索。
AM57x的所有SDK都只有2年的支持期，之后默认情况下会迁移到您所知的较新软件。
我会听从我们的PCIe工程师的意见，也许他有一些通用的建议。
SDK 4和SDK 8之间有4年的差异，在此期间，Linux内核已从4.9版本升级到5.10版本。TI将带来变化，但Linux社区将带来更多软件架构的变化。试图找到修复所看到的特定问题的提交将有点困难。
话虽如此，你总是可以从我们的git树中克隆Linux源代码，并使用“git diff”、“git whatchanged”、“git-funce”或任何其他你喜欢使用的git机制来查看ti-Linux-4.9.y和ti-Linux-5.10.y分支之间的差异。我自己快速浏览了一下，SDK 4和8之间有很多重大变化。我将链接我们的git存储库，克隆链接位于页面底部：git.ti.com/…/
源代码以及所有提交的补丁修复消息都是公开的。因此，这将取决于您是要迁移到SDK 8还是阅读提交以找到修复所看到问题的补丁。如果选择后者，我预计将需要大量的git手动工作，将4年的提交一分为二。
