On Fri, Sep 4, 2020 at 9:59 AM Steve Lentz <[email protected]> wrote: > > Tarmo: > > I’ve been following this with some interest and finally got around to trying > it on my BBB running the 2020-04-06 release. > > I have an external DS3231 connected to I2C2. I’ve got it working and mounted > as RTC1, but the magic of swapping the DS3231 for the AM335x-s is not > happening for me. > > I have confirmed the DS3231 is RTC1 by the simple method of asking for the > time with the I2C jumpers disconnected, which results in an error. > Reconnecting the jumpers restores operation of RTC1. RTC0 works whether the > jumpers are connected or not. > > I added the dtb_overlay command to /boot/uEnv.txt and restarted. I don’t > have an rc.local file, so I ran echo ds3231 0x68 > > /sys/class/i2c-adapter/i2c-2/new_device from the command line after rebooting. > > What is needed so that the device tree swaps the two clocks, making the > external DS3231 RTC0, as indicated in the thread below? Is this something in > the alpha image?
Let's check some things, please provide a dump of: sudo /opt/scripts/tools/version.sh Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYhBQX9yu6KUOSdw0tnkC0-%2Bu59RO86pvFex6Q1081UTjA%40mail.gmail.com.
