Vybird VF610 Linux soft lockup at elevated temperatures (+ 47° C)

[Rikard]

We have a custom board with a Freescale Vybrid VF610 chip and during Linux boot the system has a soft lockup.

Console dump:

...

mmc0: SDHCI controller on platform [sdhci-esdhc-imx.0] using ADMA
TCP cubic registered
NET: Registered protocol family 17
VFP support v0.3: implementor 41 architecture 2 part 30 variant 5 rev 1
snvs_rtc snvs_rtc.0: setting system clock to 1970-01-01 00:00:00 UTC (0)
BUG: soft lockup - CPU#0 stuck for 23s! [swapper:1]

This only happens when the board temperature is over 47 °C.

We then observe that when the Rx signal (SCI0_RX) is grounded the system boots and everything is working fine for temperatures over 47 °C.

Any help solving this issue is highly appreciated.

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[Yuri]

Hello,

  Some comments:

https://community.nxp.com/t5/Vybrid-Processors/Vybird-VF610-Linux-soft-lockup-at-elevated-temperatur...

Regards,
Yuri.