A similar patch that solves the same issue was actually merged for 5.18 [1].
I encountered this bug with our current u-boot (2022.01+dfsg-2ubuntu1) and linux kernel (5.15.0-1004.4): I applied the patch in [1] on top of 5.15.0-1004.4 successfully and it solved the problem. So as you already tagged it, this should be cherry-picked for 22.04. A similar patch for u-boot exists, I'll report a new bug there. Thanks [1] https://patchwork.kernel.org/project/linux- riscv/patch/20220318152430.526320-1-ben.do...@codethink.co.uk/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-riscv in Ubuntu. https://bugs.launchpad.net/bugs/1964796 Title: Fix unmatched ASMedia ASM2824 PCIe link training Status in linux-riscv package in Ubuntu: New Bug description: https://lore.kernel.org/all/alpine.deb.2.21.2202010240190.58...@angie.orcam.me.uk/raw It has been discovered that Unmatched board ships ASMedia ASM2824 PCIe which frequently fails to complete link training and negotiate stable and fast speeds. To ensure PCIe devices on Unmatched board can operate with stable and predictable link speeds cherry-pick upstream submitted patch that resolves the issue. It is currently applied as a SAUCE patch, whilst the upstream inclusion review is ongoing. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-riscv/+bug/1964796/+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
