Jetson TX2 Ethernet goes up and down

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hello,
I have a Jetson TX2 with custom kernel, is not the first one that I have flashed, but this one is constantly connecting and disconnecting the ethernet port, in the kernel logs I see this message:

Jan 28 17:02:23 beamagine-l3cam kernel: [  248.140060] bcm54xx_low_power_mode(): put phy in iddq-lp mode
Jan 28 17:02:23 beamagine-l3cam kernel: [  248.225524] gpio tegra-gpio wake18 for gpio=101(M:5)
Jan 28 17:02:26 beamagine-l3cam kernel: [  251.231316] eqos 2490000.ether_qos eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Jan 28 17:02:26 beamagine-l3cam kernel: [  251.247785] eqos 2490000.ether_qos: changing MTU from 1500 to 9000
Jan 28 17:02:26 beamagine-l3cam kernel: [  251.248041] bcm54xx_low_power_mode(): put phy in iddq-lp mode
Jan 28 17:02:26 beamagine-l3cam kernel: [  251.337576] gpio tegra-gpio wake18 for gpio=101(M:5)
Jan 28 17:02:29 beamagine-l3cam kernel: [  254.462330] eqos 2490000.ether_qos eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Jan 28 17:02:58 beamagine-l3cam kernel: [  283.146687] eqos 2490000.ether_qos: changing MTU from 9000 to 1500
Jan 28 17:02:58 beamagine-l3cam kernel: [  283.146941] bcm54xx_low_power_mode(): put phy in iddq-lp mode
Jan 28 17:02:58 beamagine-l3cam kernel: [  283.229575] gpio tegra-gpio wake18 for gpio=101(M:5)
Jan 28 17:03:01 beamagine-l3cam kernel: [  286.333466] eqos 2490000.ether_qos eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Jan 28 17:03:01 beamagine-l3cam kernel: [  286.353458] eqos 2490000.ether_qos: changing MTU from 1500 to 9000
Jan 28 17:03:01 beamagine-l3cam kernel: [  286.353714] bcm54xx_low_power_mode(): put phy in iddq-lp mode
Jan 28 17:03:01 beamagine-l3cam kernel: [  286.437694] gpio tegra-gpio wake18 for gpio=101(M:5)
Jan 28 17:03:04 beamagine-l3cam kernel: [  289.467968] eqos 2490000.ether_qos eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Jan 28 17:03:33 beamagine-l3cam kernel: [  318.134841] eqos 2490000.ether_qos: changing MTU from 9000 to 1500

What can be the reason for the kernel to start low power mode is it a hardware issue in the jetson?

Thank you!

2

If flashed the same kernel on other device, can the problem still be reproduced? If not, then that’s the HW problem.

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