Finally I found a solution!!!! No building custom modules is needed, only stock kernel configuration. Here the trick is that the I2c used bus IS NOT THE STANDARD ONE (i.e. usually con Raspberry the I2c bus is on GPIO 2 and GPIO 3, which on Kunbus are used for other pourpose). The GPIO where the RTC ...

I have tried with dtoverlay=i2c-rtc,pcf2127 but no success. The /dev/rtc is not there and i2cdetect is still empty :-( Reading syslog I found an error: Mar 8 08:48:16 ubuntu kernel: [ 2.807099] rtc-pcf2127-i2c: probe of 1-0051 failed with error -121 What does it mean? Wrong address? I think I am on ...

Hi Dirk, thanks for the link but I need a little more help. Here what I tried. * the overlay I found in https://github.com/RevolutionPi are here: https://github.com/RevolutionPi/linux/tree/96fdda2f0d71e10f7e5c67aef155cf73a07d0e50/arch/arm/boot/dts/overlays the one that seems promising is the revpi-c...

I think I need to compile and install an overlay, could you point me in the direction of the right one?

Thanks,
S.

Dear forum members, I have successfully installed the latest Ubuntu 22.04 on the Rev Pi Core, now I would like to configure the Real Time Clock. I have loaded the rtc-pcf2127 driver root@ubuntu:~# lsmod | grep rtc rtc_pcf2127 24576 0 but I can't see the device on the i2c bus: root@ubuntu:~# i2cdetec...

Really? so complicated ?
I just need to discover the i2c devices....

Regards,
S.

Dear forum, I am trying to install a Centos 7 raspberry image on Kunbus RevPi. The image works perfectly but no i2c device are present, this is probably related to the fact the incorrect device tree is loaded. In the /boot/config.txt file on the original kunbus image I found that is loaded a dtoverl...

Hi, Just to know, does someone be successful in installing Centos OS? Could someone provide some instruction on ho to install the operating System? I have tried to follow the instruction provided here: https://wiki.centos.org/SpecialInterestGroup/AltArch/armhfp but the new installed software doesn't...

Dear forum members, I am trying to emulate via QEMU the image 2020-03-02-revpi-stretch. My purpose here is to have an image for testing Ansible scripts I am writing in order to automate the deployment process in our environment. What I did is: Installing the last version of QEMU with: brew install q...