Re: watchdog timeout on Wandboard Quad
Michael Tuexen <[email protected]> Wed, 20 May 2026 20:51:02 +0200
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
> On 20. May 2026, at 17:38, Rodney W. Grimes <[email protected]> wrote: > >> Dear all, >> >> I want to run FreeBSD current on a Wandboard Quad. I installed >> https://download.freebsd.org/snapshots/arm/armv7/ISO-IMAGES/16.0/FreeBSD-16.0-CURRENT-arm-armv7-GENERICSD-20260518-ca67cfa5237f-285947.img.xz >> on a SD card and also installed /usr/local/share/u-boot/u-boot-wandboard/u-boot.imx as described >> in /usr/local/share/u-boot/u-boot-wandboard/README >> >> FreeBSD boots fine but every two minutes the watchdog timer fire and uboot boots again. >> >> The message is: >> >> U-Boot SPL 2025.10 (May 03 2026 - 12:17:39 +0000) >> Trying to boot from MMC1 >> >> >> U-Boot 2025.10 (May 03 2026 - 12:17:39 +0000) >> >> CPU: Freescale i.MX6Q rev1.2 at 792 MHz >> Reset cause: WDOG >> DRAM: 2 GiB >> Core: 65 devices, 19 uclasses, devicetree: separate >> WDT: Started watchdog@20bc000 with servicing every 1000ms (128s timeout) >> MMC: FSL_SDHC: 4, FSL_SDHC: 1, FSL_SDHC: 0 >> Loading Environment from MMC... Reading from MMC(0)... *** Warning - bad CRC, using default environment >> >> i2c_mxc i2c@21a4000: i2c bus 1 at 0x21a4000, fail to request scl/sda gpio >> auto-detected panel FWBADAPT-LCD-F07A-0102 >> Display: FWBADAPT-LCD-F07A-0102 (800x480) >> In: serial >> Out: serial >> Err: serial >> Board: Wandboard rev C1 >> Net: eth0: ethernet@2188000 >> >> Hit any key to stop autoboot: 0 >> >> How can I avoid this periodic reboot? >> > > Best way would be to find out how to disable the WDT: Started you show above, > but I am not sure how to do that. > > So..... > watchdog -t 0 > should disable it, put this in /etc/rc.local, hopefully that gits run before the 128 seconds. I can log in after boot as root (for a short time ) and get root@generic:~ # watchdog -t 0 watchdog: patting the dog: Operation not supported root@generic:~ # Then the machine reboots... Best regards Michael > >> Best regards >> Michael > > -- > Rod Grimes [email protected]