IRC log of #cubox of Fri 03 Nov 2017. All times are in CET < Back to index

09:13 topi`> jnettlet[m]: that's what I was thinking... this means that we must get the SOM without eMMC for development
09:13 topi`> jnettlet[m]: does this also prohibit integrating a SDIO-based wifi like the Wilink8 into the Armada SOM?
10:01 jnettlet[m]> It depends how you do development. More and more I am recommending embedded customers to run their apps in containers.
10:02 jnettlet[m]> Yes sdio WiFi is not an option. Although with the a38x series that really isn't the intended purpose. Too slow.
10:03 Ke> jnettlet[m]: could you confirm the type of power source you are using for mcbin and do you modify the u-boot config
10:04 jnettlet[m]> Ke: one power source is my own. 18V 2.5A. the other is the one that shipped in the box
10:04 Ke> 18V?
10:04 Ke> not18W ?
10:05 Ke> well 18W 12V would not be 2.5A
10:05 Ke> so was it a typo or not?
10:07 Ke> I am now at work and have loads of different power sources to try
10:09 Ke> I guess things to try now are 1) u-boot memtest 2) u-boot with zeroing dram 3) different power sources
10:12 jnettlet[m]> no 18V...although I was wrong this power supply was 16V 3.5A
10:13 jnettlet[m]> I also have a 12V 5A, and the one that came in the box 12V 2.5A
10:22 Ke> jnettlet[m]: so setting higher voltage for the board is safe, I guess it just heats up the regulators?
10:24 jnettlet[m]> Ke: I am quite certain that this uses the same circuit protection that our ClearFog line does. Although I will double check that with the hardware designers. It does support the same POE modules which require support of up to 45V I believe.
10:24 jnettlet[m]> although the "official" docs say only a 12V source
10:25 Ke> I guess I could also try 13.5V from my power supply to see, if it would make a difference
10:36 jnettlet[m]> Ke: you are still just running the board and memory?
10:37 Ke> sure
10:37 Ke> well SD card also
12:10 jnettlet[m]> just as there have been some questions. This is the default versions that came on my latest board. https://pastebin.com/ftjSU8WC
12:10 jnettlet[m]> obviously I have a 16GB non-ECC chip in this board
12:13 Ke> wow 17.02 is anciend
12:13 Ke> ancient
12:14 jnettlet[m]> yep, this is just for posterity's sake
12:15 suihkulokki> jnettlet[m]: thanks
12:15 suihkulokki> what is more complete, mainline u-boot or tianocore port?
12:18 jnettlet[m]> that is a good question. I am actually going through the mainline mv-ddr implementation. It appears at least with the a388 implementation that a bug has been introduced.
12:19 jnettlet[m]> after ~1000 memory initializations we hit a failure. We the Marvell implementation it made it through 10000 before we ended the test.
12:27 Ke> yup, 3A power source did not help
16:41 vpeter> jnettlet[m]: is uEnv.txt still supported in mainline u-boot? Or it was dropped.
16:44 jnettlet[m]> vpeter: it is supported but you need to define the BOOTCMD in it. If the distro has a generic boot.scr or extlinux it can be used to customize some variables
16:44 vpeter> Yes, just googled.