My Espressobin v5 with 4.14 reports 800Mhz and I am wondering if is there any progress on making it work at 1G or 1.2Ghz?

 

On 1/1/2021 at 11:11 PM, egg said:

 

is there any progress on making it work at 1G

 

 

Yes, see my comment https://forum.armbian.com/topic/4089-espressobin-support-development-efforts/?do=findComment&comment=110303 After my tests it seems to be stable on 1GHz CPU, but testers are welcome! I'm planning to send a new version of patches.

 

 

On 1/1/2021 at 11:11 PM, egg said:

 

or 1.2Ghz?

 

 

Do you have a board with 1.2GHz SOC variant? I'm asking because I have not seen Armada3720 SOC with 1.2GHz CPU yet. See my comment https://forum.armbian.com/topic/15059-espressobin-mainline-u-bootatf/?tab=comments#comment-109760 where I wrote how to detect CPU variant.

 

I have a 2Gb espressobin V5 board. Where could the SOC variant be found on the board?

I also had trouble with the board CPU and unable mounting to 1.2GHz. I am currently running with 1.0GHz, but the board is rebooting on its own every day or two.

Here are my board pictures :

https://mega.nz/folder/OpRDwRCa#lKtPNqEUyTHB5V_HZJEiew

6 hours ago, y52 said:

Where could the SOC variant be found on the board?

https://mega.nz/folder/OpRDwRCa#lKtPNqEUyTHB5V_HZJEiew

 

Marking is directly on the SoC. A3720 SoC chip is on the first picture, big square on left, second one from the top. It has big M logo, below it chip number (3720) with other information. Look at my previous comment.

Thank you Pali. It was good to finally discover the SoC chip frequency. My chip shows something like (difficult to read):

 

66F3720-XX
C100 ??

thus a C100 1 GHz part.

It was not advertised as this, as GlobalScale sold it as a 1.2 GHz board. Those who were supplied a 800 MHz variant could have been surprised badly. I believe it is a bad practice leading to confusion as well as it brings users more challenges finding the right implementation.

Having said that, my 1 GHz board still remains unstable with the 1 GHz firmware variant.

I understand, that some progress was made with u-boot settings. Where could a new version with patches be found?

 

1 minute ago, y52 said:

thus a C100 1 GHz part.

 

Yes, C100 code means 1 GHz variant of A3720 SoC.

 

1 minute ago, y52 said:

Having said that, my 1 GHz remains still unstable with the 1 GHz firmware variant.

 

It is unstable in U-Boot or in running Linux system?

 

Because in Linux kernel since version 5.13 are all patches mentioned above for testing. Patches were backported also in stable Linux kernel versions. Which version of Linux kernel are you using? And what does ot mean _still unstable_?

It is unable sustaining a day or two without a sporadic reboot. It doesn't leave any error logs. It just reboots on its own. I  am not sure if this is a U-Boot preset settings, which lead to instability or a current running Linux system. The latter one is :

Linux espressobin 4.19.56-mvebu64 #5.89 SMP PREEMPT Tue Jun 25 22:27:47 CEST 2019 aarch64 GNU/Linux

1 minute ago, y52 said:

4.19.56-mvebu64 #5.89 SMP PREEMPT Tue Jun 25 22:27:47 CEST 2019

 

I'm not surprised. You have more than 2 years old version. See table on https://www.kernel.org/ where is list of latest versions.

 

Please upgrade to some new version, all mentioned fixes are from this year.

Yes, this is a production board, which I rely upon. Thus a lot of things will need to be reinstalled. Has anybody here shared his experience upgrading to a new kernel ?

On normal Debian stable is kernel upgraded automatically and without any problem just via apt update && apt upgrade