Hello,

Is there a recipe that works to install the RTC (DS3231/1307)? I googled 
and tried a lot of things but can not make it work. I succeeded on older 
Debian versions but now I am lost.
I have Debian 2018-10-07. The hw works as proved by i2cdetect -y -r 2. At 
address 0x68. "echo ds1307 0x68 >/sys/class/i2c-adapter/i2c-2/new_device" 
gives: permission denied.
Looks like I need to do something with overlay files? But uEnv.txt does not 
need to be modified, right? ls -al /dev/rtc*: only gives two entries for 
rtc0.
Please help.
Many thanks in advance,
Harke

 

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