i.MX ProcessorsのトピックMethods to reset PCIe devices on i.MX8 under Linux system https://community.nxp.com/t5/i-MX-Processors/Methods-to-reset-PCIe-devices-on-i-MX8-under-Linux-system/m-p/2205963#M242214 <P>Our i.MX8QM uses PCIe A and PCIe B to connect two PCIe network cards. Among them, the network card on PCIe A works normally, while the PCIe network card on PCIe B may occasionally encounter link training failure during driver initialization. However, it can complete initialization successfully after each device restart. Since the probability of link training failure is low, we intend to reset PCIe B when such a failure occurs. After the reset is completed, we will reload the driver to trigger device initialization and link training. Please let us know the specific implementation method. Thank you!</P> Mon, 17 Nov 2025 09:12:18 GMT pengluo 2025-11-17T09:12:18Z Methods to reset PCIe devices on i.MX8 under Linux system https://community.nxp.com/t5/i-MX-Processors/Methods-to-reset-PCIe-devices-on-i-MX8-under-Linux-system/m-p/2205963#M242214 <P>Our i.MX8QM uses PCIe A and PCIe B to connect two PCIe network cards. Among them, the network card on PCIe A works normally, while the PCIe network card on PCIe B may occasionally encounter link training failure during driver initialization. However, it can complete initialization successfully after each device restart. Since the probability of link training failure is low, we intend to reset PCIe B when such a failure occurs. After the reset is completed, we will reload the driver to trigger device initialization and link training. Please let us know the specific implementation method. Thank you!</P> Mon, 17 Nov 2025 09:12:18 GMT https://community.nxp.com/t5/i-MX-Processors/Methods-to-reset-PCIe-devices-on-i-MX8-under-Linux-system/m-p/2205963#M242214 pengluo 2025-11-17T09:12:18Z Re: Methods to reset PCIe devices on i.MX8 under Linux system https://community.nxp.com/t5/i-MX-Processors/Methods-to-reset-PCIe-devices-on-i-MX8-under-Linux-system/m-p/2206040#M242217 <P>try the command "echo 1 &gt; /sys/bus/pci/rescan" i</P> Mon, 17 Nov 2025 11:03:02 GMT https://community.nxp.com/t5/i-MX-Processors/Methods-to-reset-PCIe-devices-on-i-MX8-under-Linux-system/m-p/2206040#M242217 joanxie 2025-11-17T11:03:02Z