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From 04/15/2013 to 05/14/2013

05/13/2013

12:10 PM PCB Development: MityArm 335x Minimum Voltage Operation
According to the MityArm 335x Datasheet the minimum input voltage is 3.2VDC and the typical is 3.3VDC. Is the minimum... Michael Schantzen

05/01/2013

03:52 PM Software Development: RE: Pin Mux on AM3359
Thanks Tim I think I am on the right track now.
I made the following changes in baseboard-mityarm335x-edvkit.c:
<...
Brian Compter
11:36 AM Software Development: RE: u-boot question
Thanks Tim,
That would do it.
John C.
Anonymous
11:34 AM Software Development: RE: u-boot question
John
That ID string is actually being printed by the MLO, not u-boot.
You'll need to reflash the MLO to see the cha...
Tim Iskander
11:30 AM Software Development: u-boot question
Hi,
We have the older MITYARM 335x modules with the DDR2 and have done minor tweaking to u-boot (as in adding u...
Anonymous

04/30/2013

05:28 PM Software Development: RE: Linux Can't Detect Module NAND on Custom Carrier
Thats great news... I'll tuck that bit of info away for later!
cheers
/Tim
Tim Iskander
04:58 PM Software Development: RE: Linux Can't Detect Module NAND on Custom Carrier
We got to the bottom of this. We had some pullups on some of the higher order SYSCONFIG bits, setting boot clock to ... Michael Karasoff
01:43 PM Software Development: RE: Linux Can't Detect Module NAND on Custom Carrier
Tim,
Thanks. I've checked the pinmux settings and could find nothing that struck me as incorrect. We are using t...
Michael Karasoff
07:08 AM Software Development: RE: Linux Can't Detect Module NAND on Custom Carrier
Mike,
Check the pinmux settings and connections for the rest of the GPMC signals. I would think if there was an elec...
Tim Iskander
12:32 PM Software Development: RE: Pin Mux on AM3359
Brian
On the AM335X based SOM's the linux kernel (assuming you are using linux) will need to configure all of the pi...
Tim Iskander
11:41 AM Software Development: Pin Mux on AM3359
I am working with a AM3359 dev kit and need to get UART 1 and 2 working. As I understand they are configured for CAN... Brian Compter

04/29/2013

10:30 PM Software Development: Linux Can't Detect Module NAND on Custom Carrier
Hello,
We are having a odd problem with a custom carrier, and wondering if anyone has come across a similar situat...
Michael Karasoff
10:20 AM Software Development: RE: MityArm u-booting from SPI flash
Mike,
I should also mention that on TI's wiki page (at the bottom) they mention that when you do build uboot fo...
Anonymous

04/26/2013

03:58 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Just a pre-weekend update...
We had to switch from the TI PSP u-boot to the mainline u-boot, which is what has kept ...
Tim Iskander
10:35 AM Software Development: RE: MityArm u-booting from SPI flash
Hey Mike,
Our SPI flash is external (on our base card on SPI bus 0), so there should not be an issue boo...
Anonymous
10:18 AM Software Development: RE: MityArm u-booting from SPI flash
Just to confirm,
You are using a MityARM-335X, right?
Are you trying to use the on-board SPI, or an external SP...
Michael Williamson
09:13 AM Software Development: MityArm u-booting from SPI flash
Hi,
I know we had asked about this previously but was hoping to get a little help with the flags and config f...
Anonymous

04/24/2013

01:16 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike
unfortunately, that was just a secondary issue. Currently there is no support for the 4K page size NAND in any ...
Tim Iskander
12:03 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Tim,
Thanks. Does this resolve the issue, or do you still need to modify ECC on the MLO?
Michael Karasoff
07:31 AM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike
I discovered this same issue yesterday. The mtdparts in the kernel where set up for the 256MB part and not upda...
Tim Iskander
12:07 AM PCB Development: RE: 1GHz AM335x
Hi Mark -
The revision "A" silicon from TI refers to silicon revision 2.0. The current revisions use the revision ...
Thomas Catalino

04/23/2013

10:53 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Out of idle curiosity, I ran mtdinfo on both boards:
For the 256MB:
mtd1
Name: SPL
Ty...
Michael Karasoff
04:14 PM PCB Development: RE: 1GHz AM335x
Hi -Mike- Mark (sorry),
Couple of comments.
* The PMIC should support the higher current (specs range from 1A m...
Michael Williamson
03:49 PM PCB Development: 1GHz AM335x
TI added 800 MHz and 1 GHz operating points in the latest data sheet for Rev A or newer AM335x processors along with ... Anonymous

04/22/2013

06:09 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
*formation to u-boot supports.* I mean "format that u-boot supports". Sorry, spell check.... Michael Karasoff
06:07 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
And also, I'm assuming that the bootloader environment section falls into the same category as u-boot.img. That is, ... Michael Karasoff
06:02 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike,
OK, this makes sense. Sorry for being a bit slow on the uptake. The issue isn't the flash per-se, its matc...
Michael Karasoff
05:34 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
It depends on whether you want to be able to (re)flash a bootable MLO from linux. If the linux kernel does not suppo... Michael Williamson
05:27 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
_We have to look at the kernel as well to see how it deals with the device._
Does this mean there may be an issue ...
Michael Karasoff
03:46 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike,
booting from MMC first sounds like a good plan to me :)
as for the XIP/wait... if the bootrom is not stalling...
Tim Iskander
02:58 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Tim,
Thanks. We bit 9 set to zero, we no longer get curious boottime ECC error messages we were getting on the DD...
Michael Karasoff
02:45 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
The good news is I think we have found the cause of the issue.
When the 335x boot ROM sees the 4K page size in the N...
Tim Iskander
09:14 AM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike
While I chase down the block size issue, other Mike pointed out that you have bit 9 of the SYSBOOT pins as a 1....
Tim Iskander

04/20/2013

04:39 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Mike,
Thanks for the quick reply.
For our application, the 256MB flash is not a problem, but our current desi...
Michael Karasoff
02:04 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Hi Mike,
We are still chasing this here. The 2K vs. 4K page size issue may not be correct for the 512 MB (it came...
Michael Williamson
01:42 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Tim,
Thanks for the tip.
I'm a bit uneasy hacking the bootloader for hardware that I didn't design and don't...
Michael Karasoff

04/19/2013

04:02 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
A quick update...
I have not had a chance to verify this suspicion, but the current u-boot is configured to use a 2K...
Tim Iskander

04/18/2013

01:06 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
I will be looking in to this very soon and will report back.
cheers
/Tim
Tim Iskander
12:18 PM Software Development: RE: DDR3 Factory EEPROM Incorrect
Tim,
Thanks. The system did seem to boot fine from MMC with the MLO/u-boot built from git.
At this point I'm m...
Michael Karasoff
07:24 AM Software Development: RE: DDR3 Factory EEPROM Incorrect
Michael
The DDR3 modules require the newer version of u-boot (and MLO). From the output you have listed above, the f...
Tim Iskander

04/17/2013

11:10 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
I think I am having the same problem as Kim.
I use similar scripts:
mmc rescan; mw.b 0x82000000 0xFF 0x80000; f...
Michael Karasoff
10:25 PM Software Development: RE: DDR3 Factory EEPROM Incorrect
Just rebuilt u-boot.img out of git, and now my system boots fine.
Still curious about what is in the factory EEPRO...
Michael Karasoff
09:37 PM Software Development: DDR3 Factory EEPROM Incorrect
We received a batch of AM335x boards with 512MB RAM/NAND that appear to have no factory configuration programmed:
...
Michael Karasoff

04/16/2013

08:36 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
I have programmed both MLO and u-boot with the same results. It appears MLO is not loading & running. Why are the NAN... Kim Weller
05:19 PM Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
Hi,
Other than the fact that the selected boot mode will try to use the UART first over the NAND (and you aren't p...
Michael Williamson
 

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