Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

11/10/2016

DV 02:19 PM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hi Dominik,
Glad you found the solution! I know I've spent many hours working on kernel issues to have them solved with one line changes.
Thank you for the update!
Dan Daniel Vincelette

DM 01:21 PM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hey Dan!
I found the culprit! :)
As it often happens in linux kernel, the solution turns out to be very trivial.
It requires enabling CONFIG_LBDAF, which extends kernel partition device sector count width from 32 to 64 bits.
http:/... Dominik Marszk

DV 11:58 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hi Dominik,
The only thing I could really think of was try the very verbose USB output like you initially suggested or add printk's to the USB driver. Try it with a flash drive and then the 8TB devices and compare the outputs.
I'm ... Daniel Vincelette

DM 09:20 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hey Dan,
Thanks for your reply.
Building CHR_DEV_SG into mitysom kernel doesn't seem to fix anything. The SG initialization message appears now though. I've also tried to use /dev/sg0 device as the dd input with and without DEV_SD dr... Dominik Marszk

DV 11:51 AM Software Development: RE: GPIO pins high during Pre-loader/Uboot 5CSE-H4-3YA

Hi Brian,
Unluckily the initial values of the GPIOs aren't configurable from what I've seen. You could edit board/cl/mitysom-5csx/mitysom-5csx.c and in the board_init function set the GPIOs values but I'm not sure how long it takes to... Daniel Vincelette

11/09/2016

BW 11:35 AM Software Development: GPIO pins high during Pre-loader/Uboot 5CSE-H4-3YA

Hello,
I have a project where I hooked up leds to several gpio lines. The gpio lines go high for about 5 seconds (which is not acceptable for this application) during what seems to be the preloader/uboot stage and then go low once the... Brian Wentworth

10/26/2016

DV 10:07 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

So this might be a red herring but in the pi's dmesg it has the following line, which the MitySOM doesn't: Daniel Vincelette

10/25/2016

DM 11:10 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hello Dan,
Yes. I tested with 8 and 16GB USB sticks as well and it works just fine, so the culprit might be in the unusual size. Dominik Marszk

DV 09:21 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

Hello Dominik,
Have you tried a quick test of using a smaller flash drive with the MitySOM? Just to see if we can get a baseline, I've used 8GB/16GB flash drives on the MitySOM without issue.
Thanks!
Dan Daniel Vincelette

BW 09:49 AM Software Development: RE: SPI on MitySOM

Thanks so much. That info provided the missing link for the Device Tree
--Brian Brian Wentworth

10/24/2016

DM 05:20 AM Software Development: RE: 8TB USB Mass Storage device being unreadable

The kernel used on MitySOM is 3.16.0. Dominik Marszk

DM 05:12 AM Software Development: 8TB USB Mass Storage device being unreadable

Hello!
I'm trying to use an USB device enumerating as a 8TB Mass Storage with 5CSX-H6-42A kit. It's connected through a mini-USB OTG adapter.
It doesn't appear to be working properly. Any read from the device ends up returning 0 byte... Dominik Marszk