Mity CPU Platforms » MitySOM-335x (ARM Cortex-A8 Based Products)

09/19/2013

03:00 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

Thanks for the procedure. In case you weren't aware I wrote up a guide on doing this without the kernel being stored... Jonathan Cormier

02:41 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

The procedure is simple - I create a UBI image (mkfs.ubifs & ubinize) with uImage and rootfile system volumes and pro... Michael Karasoff

09/17/2013

02:50 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

Michael,
I've added your changes including my alternative change to a test branch on my machine. If you could tes... Jonathan Cormier

02:48 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

Ok cool. We've never tried storing the kernel in a ubifs partition. If you have it working I'd be interested in you... Jonathan Cormier

02:31 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

... Michael Karasoff

02:17 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

Do you have a reference for your first change? Or did you find this through trial and error? Jonathan Cormier

02:14 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

Michael,
You should be able to replace your second change with:... Jonathan Cormier

01:41 PM Software Development: RE: Writing UBIFS rootfs to AM3354 with 512MB NAND

To boot from UBI with the 512MB NAND, I had to modify the 2013.01 branch bootloader:... Michael Karasoff

09/09/2013

03:40 PM Software Development: RE: Yocto in the future?

One other thing... you will need to set defconfig to the appropriate config file - it is easiest just to copy this f... Michael Karasoff

02:48 PM Software Development: RE: Yocto in the future?

Sure. First I should make clear the Yocto version - it is *dylan*-9.0.0 , not denzil. This is also Yocto/Poky... la... Michael Karasoff

08:42 AM Software Development: RE: Yocto in the future?

Thanks Michael for the update. Would you be willing to share the steps you did to get it working or maybe just the w... Jonathan Cormier

09/07/2013

04:32 PM Software Development: RE: Yocto in the future?

3.2 Kernel appears to run fine under Yocto (denzil-9.0.0). Michael Karasoff

07:35 AM Software Development: RE: High Latency for GPIO Interrupts in 3.2 Kernel

Thanks Michael,
We'll get it applied in the local tree (which came from TI, really).
Sorry for the inconvenie... Michael Williamson

03:37 AM Software Development: RE: High Latency for GPIO Interrupts in 3.2 Kernel

This is a bug in the kernel. Lines 215-219 of the file arch/arm/mach-omap2/irq.c should be modified:... Michael Karasoff

09/06/2013

11:25 PM Software Development: RE: High Latency for GPIO Interrupts in 3.2 Kernel

The GPIO interrupt is on GPIO bank 0. Is there any chance that there is power management being applied to the GPIO o... Michael Karasoff

11:06 PM Software Development: RE: High Latency for GPIO Interrupts in 3.2 Kernel

Kernel Module. Michael Karasoff

08:12 PM Software Development: RE: High Latency for GPIO Interrupts in 3.2 Kernel

Are you handling the interrupts in a kernel module or via the gpio sysfs file hooks?
Michael Williamson

06:00 PM Software Development: High Latency for GPIO Interrupts in 3.2 Kernel

Just switched over to the 3.2 Kernel from 3.1 to support programming of the 512MB flash, and the latency for a GPIO I... Michael Karasoff

09/04/2013

03:23 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Tim,
No worries! I appreciate you getting the 512MB to work!
I downloaded from three different places on the C... Michael Karasoff

03:15 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Mike
Sorry about that!
I did add a board type for this configuration, but didn't really document it very well. :(
... Tim Iskander

02:39 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Jonathan,
I found the problem - looks like a bug in your u-boot code. For some reason, the MITYARM_4K_PAGE_NAND e... Michael Karasoff

02:21 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Jumpers only affect where the board looks for bootup code. The ubifs wiki page has my jumper config for booting from... Jonathan Cormier

02:19 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Mike can you run "nand bad"?
Did you use an older u-boot before you got the updated one? Its possible the older u-... Jonathan Cormier

02:05 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Jonathan,
Thanks. Yes, my suspicion is that I don't have the correct u-boot. I've built u-boot from source, the ... Michael Karasoff

09:13 AM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

Mike,
I've added the correct mtdparts and other information on flashing the nand in the following wiki: http://sup... Jonathan Cormier

09/03/2013

09:17 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND

I am still having trouble programming the MLO and uboot into NAND from u-boot on an AM3354.
I've tried the MLO, uE... Michael Karasoff