Activity
From 03/24/2013 to 04/22/2013
04/22/2013
- MK 06:09 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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....
- MK 06:07 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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, the MLO doesn't rely on this section, and that it just needs to be in a formation to u-boot supports.
- MK 06:02 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 matching the SPL to the TI ROM scheme. Am I getting this right?
I can't speak for other customers, but for us flashing t... - MW 05:34 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 support BCH16 in the same format (it may be using BCH8, which is OK with this particular part) as the TI ROM bootloader requi...
- MK 05:27 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 with the kernel as well? - TI 03:46 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 waiting for the device, then you are all set!
There are no XIP bootable devices on the AM335X module or devkit board, ... - MK 02:58 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 DDR2 board.
Still I cannot boot from NAND on the DDR3 board, even with both 9 set to zero and bits 4-0 to 10011.
A... - TI 02:45 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 NAND, it switches to a 16 bit ECC scheme, hence the data written with an 8 bit scheme
is invalid.
The less good news ... - TI 09:14 AM MitySOM-335x (ARM Cortex-A8 Based Products) 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. This tells the boot ROM that the NAND device is doing
error correction. 99.9% sure you don't want this as the NAND de... - I am using the following timing constraints.
If I remember correctly, I started from the industrial I/O example and these were there.
NET "i_ema_clk" TNM_NET = "i_ema_clk";
TIMESPEC "TS_ema_clk" = PERIOD "i_ema_clk" 10 ns HIGH 50 %;...
04/20/2013
- MK 04:39 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 design relies on the 512DDR3 and the ability to boot from NAND. From what I can tell, 512MB Ram/256MB NAND is not an option... - MW 02:04 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 up in conversation for supporting a 1 GB configuration and I wasn't sure if the 512MB part is 4K or 2K, we are tracking... - MK 01:42 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 have a lot of details on (like schematic, BOM, etc.). Actually, a strong selling point for the mityarm is that I would...
04/19/2013
- TI 04:02 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 page size... the 4gb NAND uses a 4K page size...
I am going to try modifying u-boot (its in the config, so you can try...
04/18/2013
- TI 01:06 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 - MK 12:18 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 more concerned about programming and booting from NAND on the 512MB board. That doesn't appear to work using the same me... - TI 07:24 AM MitySOM-335x (ARM Cortex-A8 Based Products) 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 first (non-working) attempt was using an old MLO.
The old version of MLO does not know how to configure the DDR3 RAM, an...
04/17/2013
- MK 11:10 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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; fatload mmc 0 0x82000000 MLO; nandecc hw 2; nand erase 0x0 0x80000; nand write.i 0x82000000 0x0 $filesize
mmc rescan; mw... - MK 10:25 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 EEPROM and how I can recover if lost. - We received a batch of AM335x boards with 512MB RAM/NAND that appear to have no factory configuration programmed:
@U-Boot SPL 2011.09-00000-g23e81b9-dirty (Feb 24 2012 - 11:15:23)
Texas Instruments Revision detection unimplemented
E... - LM 06:31 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: USB on the go speed
- Hi Mike,
It would be great if I can get a copy of your sample code! It would help tremendously if I can get close to 10MB/s transfer rates.
Thanks,
Lars - MW 05:03 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: USB on the go speed
- Hi Lars,
We have found that RNDIS has been very slow as well and we have not used the serial gadget, but I would suggest that using larger packet sizes will help. We have used the gadgetfs driver with a camera product here and were a... - Hi,
When I configure Linux (3.2.0+) to use the ethernet gadget with RNDIS support, I get poor data transfer speeds. With data packet sizes aligned to the Ethernet packet size, we typically find speeds in the order of 0.6MB/s. That is pe...
04/16/2013
- KW 08:36 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 NAND blocks marked bad after flashing MLO and u-boot?
We're mainly have DDR3 (AM3354) CPU modules and ran out of the few... - MW 05:19 PM MitySOM-335x (ARM Cortex-A8 Based Products) 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 programming u-boot, only the MLO -- you'll need to program both into NAND), it's not obvious to me why this is not workin...
04/15/2013
- MW 08:54 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: release_2012-03-12.run install failed
- Check the "BSP Wiki Page":http://support.criticallink.com/redmine/projects/arm9-platforms/wiki/Board_Support_Package. You need to use bash instead of dash as your primary shell (check your link to /bin/sh). Instructions to fix that up ...
- Hello all,
I was failed when i tried to install release_2012-03-12.run,
my OS is Ubuntu 12.04,
it prints in the terminal as follow:
# sh release_2012-03-12.run
Verifying archive integrity... All good.
Uncompressing release_201... - JC 11:15 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- Mary,
Thanks for the update. I have created a task to enable SATA by default for the next MDK release. It was set in the old 2.6 kernel but was missed in the 3.2 update. - MF 09:24 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- I got it working.
I compared myconfig to the .config file in the MDK_2012-08-10 linux-davinci directory and they were the same. I was able to follow the directions for building a kernel in your wiki page. (Except that I built it fro...
04/12/2013
- KW 03:49 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- MW 03:37 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- Thanks.
What are your boot jumper settings?
-Mike
- KW 03:34 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- Here's my programming steps with NAND OOB info.:
U-Boot# nand bad
Device 0 bad blocks:
00780000
U-Boot# mmc rescan
U-Boot# mw.b 0x82000000 0xFF 0x20000
U-Boot# fatload mmc 0 0x82000000 MLO
reading MLO
39123 bytes read
U-... - MW 03:15 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- Could you provide any details on what your FLASH procedure is and what you are seeing when you try to boot?
What bootmode are you configuring for FLASH boot?
This will allow us to reproduce the problem here.
Thanks.
-Mike
- KW 03:12 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- Yes, MLO & u-Boot were rebuilt for DDR3 and ran fine on the 3354 w/ DDR3 booting from SD card.
-Kim
- MW 02:45 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Difficulty in flashing MLO and U-Boot to the AM3354 with 512MB NAND
- Errr.... any more details than that???
The MLO and u-Boot images must be updated for the 3354 DDR3 configuration. Are they using the correct version of the MLO and u-Boot?
What is the FLASH procedure [edit] being used?
-Mike
- Customer states that they are having difficulty flashing MLO and U-Boot into the 3354-GX-X38 module. No issues encountered when flashing MLO and U-Boot in the 3359-GX-226 module.
04/11/2013
- MW 01:57 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- I don't think you will need to rebuild DSPLINK or CMEM.
You should be able to take the myconfig and copy it to the .config.
In theory you could edit the myconfig, but generally it's better at that point to run menuconfig and select... - MF 01:36 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- What's the best way to do that and change only that one feature?
I generated a config file from my kernel with the following command:
zcat config.gz > ~/myconfig
(See attached file)
Can this file be edited to make the required... - MW 11:54 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- You need SATA_AHCI_PLATFORM set. You will need to rebuild the kernel.
-Mike
- MF 11:42 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- Here's the result:
- JC 11:36 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- Mary,
You can print the kernel config file by running:
_zcat /proc/config.gz _
You can then search the output:
_zcat /proc/config.gz | grep SATA_
- MF 11:24 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- My colleague has another SATA drive and MityDSP board. He reports as follows:
"The drive comes up fine in Windows with the USB-SATA bridge, but no sign of it on the Mity DSP. We located an old, working SATA 1 drive and that one didn... - JC 10:51 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- Mary,
There should be no reason that the drive isn't detected by Windows XP when using a USB to Sata adapter. Assuming you know the adapter works with other drives, it is possible the drive is bad. - MF 09:20 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SATA not recognized
- I have tried the same SATA drive on a second MityDSP board as well as an older SATA drive. There are no "ata" messages in the boot log.
Could someone please respond?
Mary -
10:57 AM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: Assigning params from memory in u-boot
- We finally have something that will work, but is not ideal. By using itest we look to see which
of our images is the preferred for booting and then checks the image, and if it is good, unzips
it and jumps. The main issue is that this...
04/10/2013
- Hi,
I've followed the instructions on http://support.criticallink.com/redmine/projects/arm9-platforms/wiki/Installing_Open_Embedded_Core. The last step failed with the messages below. This is all pretty new to me. Suggestions would be... - JC 03:33 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Assigning params from memory in u-boot
- John C.,
Looks like md might do what you want.
/* Memory Display
*
* Syntax:
* md{.b, .w, .l} {addr} {len}
*/
md.l 80000000 1
80000000: 807fffe0 ....
Unfortunately its output seems rather verbose.
http://sup... - JC 03:21 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Assigning params from memory in u-boot
- John C.
Heres a link to the source code for the itest command.
http://support.criticallink.com/gitweb/?p=u-boot-mityarm-335x.git;a=blob;f=common/cmd_itest.c;h=2a238a43e5d13e56db36665562162eee5e512705;hb=HEAD
It doesn't have any op... -
02:47 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: Assigning params from memory in u-boot
- Tim and Mike,
I found this command that works in testing the contents of memory. Is there any way to get that value into
a param?
if itest.l *80000000 == 80800020; then echo error; fi;
Thanks,
John C. -
08:40 AM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: Assigning params from memory in u-boot
- Thanks Tim and Mike,
I think that unless it is an easy port of updating/saving the u-boot environment params(like in I need to be
done today), modifying one of the u-boot commands might be the way to go. We also have another l... - TI 08:15 AM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Assigning params from memory in u-boot
- Not sure if this will do what you really want, but if you load the image from flash (read the max image size into ram, thus avoiding the need to know it beforehand)
you can then run the imi command on it (as it has a u-boot image header... - MW 07:13 AM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Assigning params from memory in u-boot
- Hi John,
u-Boot doesn't really have much for interpretative type scripting. I don't think you can accomplish this with the stock u-Boot.
Options:
1. You could easily extend the u-Boot crc32 command or add your own to create a e...
04/09/2013
-
10:38 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: Assigning params from memory in u-boot
- Hey Jonathan,
The issue is that we are burning our image into flash from our StarterWare code base. The new
StarterWare image is burned into SPI flash memory location 0x300000 and has a mkimage header. When y... - JC 04:35 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: Assigning params from memory in u-boot
- I'm unsure how to do what your looking for. All the references I could find have you set the image size in an environment variable when it is flashed to the spi flash.
Example: http://wiki.atlas-embedded.com/index.php?title=Flashing_Li... -
04:08 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: Assigning params from memory in u-boot
- Hi,
Were are in the final stages of booting our StarterWare image from uboot. Currently we have our compressed image
loaded into SPI flash with a mkimage header attached on the top. I am trying to make a uboot script that will loa... - MC 02:02 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: GPIO interrupt in MityOMAP-L138F
- Hi Mike,
thanks for fast reply!
The best would be an example using an fpga gpio pin and an omap pin, just to test the possibilities.
Does the .tcf configuration file has a role in configuring the interrupt based on an fpga gpio p...
04/08/2013
- MW 01:07 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: GPIO interrupt in MityOMAP-L138F
- Are you trying to use a FPGA GPIO or an OMAP-L138 GPIO?
The DspGpio.h class should provide access to the OMAP-L138 GPIOs from the DSP. The DspFpgaGpio.h class should be used to access FPGA based GPIO modules. Both classes are derive... - Hello all,
I need to hook a HWI to a GPIO pin in a DSP application.
I have some questions:
1- Do your core library provide any class to do that? I see DspFpgaGpio.h and Gpio.h, but they lack a bit of documentation, and I can't find ... - FT 12:49 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: L138 - DSP Timer interrupt question ...
- Mike,
Thanks for information. Always very intressting. I am reading the Day2_AM training document.
Here our current system. We are using UPP to get data from FPGA. There is a block of data around each 17 ms.
Correct me if I am w... - Hello,
I am using Virtual Box and MityDSP-L138_SDK_2012_06_13.eva image.
When I following Start Guide instruction step by step.
(1) Install Gcc toolchain 4.5.4
(2) Update Eclipse CDT
But when I build HelloWorld Application I get ...
04/07/2013
- MW 07:53 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: L138 - DSP Timer interrupt question ...
- Check the "Interrupt Handling - Delayed Branch Latency" section of the Day2_AM training presentation located in our "MityDSP-67XX project files folder":http://support.criticallink.com/redmine/projects/dsp-products/files.
It's for the ...
04/04/2013
- FT 04:27 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: L138 - DSP Timer interrupt question ...
- Mike,
Can you add more details regarding this statement: _The DSP loop optimization can create large interrupt latency as well (which can cause missed interrupts on things like large memory copies by the CPU, etc)._
For example, ... -
03:07 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: No unzip in MityArm uboot?
- Thanks Jonathan,
I added #define CONFIG_CMD_UNZIP to the file, rebuilt u-boot and burned it into NAND. So I was able to do the following
from a u-boot prompt and our application runs:
mw.b 0x8C100000 0x00 2E274
sf probe 0:... - JC 12:31 PM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: No unzip in MityArm uboot?
- In the file include/configs/mityarm335x.h you need to insert
_#define CONFIG_CMD_UNZIP_ -
12:10 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: RE: No unzip in MityArm uboot?
- Where is the board header file?
Thanks,
John C. - MW 11:37 AM MitySOM-335x (ARM Cortex-A8 Based Products) Software Development: RE: No unzip in MityArm uboot?
- You will probably need to rebuild it and enable the optioncommand by adding a CMD_XXX (CMD_ZIP? would need to check) to the board header file.
Many options / features of u-boot may not be enabled in our default u-boot application in o... -
10:38 AM
MitySOM-335x (ARM Cortex-A8 Based Products)
Software Development: No unzip in MityArm uboot?
- Hi,
We are running the critical link u-boot version(below) on the MityArm and it appears that there is not a unzip command available. The reason we need it is that the StarterWare image we are running is over 3Mbytes in size and ... - JC 11:43 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: MityDSP-L138F Failure to Boot and Cannot Reset
- Also feel free to look through the wiki http://support.criticallink.com/redmine/projects/arm9-platforms/wiki
- JC 11:40 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: MityDSP-L138F Failure to Boot and Cannot Reset
- The username for the modules should be _root_
04/03/2013
- MT 10:16 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: MityDSP-L138F Failure to Boot and Cannot Reset
- Hi,
Thank you so much for supporting.
For (1): At the first time. Now the board are running with null modem cable that is provided with the kit.
For (2): Yes, I am looking for the power good LED to flash?
Another question,
When... - MW 07:17 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: MityDSP-L138F Failure to Boot and Cannot Reset
- I am assuming these are out of the box Development kits?
For (1) the console UART, please ensure you are using the serial cable provided with the kit (I believe the board requires a null modem cable connection).
For (2), when you s... - CR 08:27 AM MityDSP-L138 (ARM9 Based Platforms) PCB Development: RE: Resistors in EMA signal and adress traces?
- Mike,
it's the L138-FX-225-RC Module. No FPGA.
I'm concerned about both kinds of traces.
Christian - MW 07:33 AM MityDSP-L138 (ARM9 Based Platforms) PCB Development: RE: Resistors in EMA signal and adress traces?
- Which part number? Specifically, does the module include an FPGA or not?
Which EMA traces are you concerned with, data lines, control, or both?
I do not believe there are any inline series resistors on the data or address lines.
... - Hi,
can anybody tell me if there are already resistors on the EMA-traces on the L138-Modul integrated? If yes, what are the values of them?
thanks,
Christian
04/02/2013
- Hello
I am using Industrial I/O board(80-000268RI-2 A) and 2 L138 board (L138-CG-225-RC ,L138-FG-225-RC).I got 2 issues:
(1) When I connect L138-CG-225-RC to Industrial I/O board. The Power Good LED lights up, and I can reset board, ...
03/28/2013
- Trying to install an intel 330 series SSD (60 Gb). I have a power brick for it and plugged that in. Connected to the SATA port (J503) and .... nothing. I saw the errata about Gen3 SATA drives, but there are no messages about atal or S...
03/26/2013
- MW 07:12 PM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: VBACKUP Current Draw
- Mark,
Great catch! This is certainly acceptable, and we'll likely modify either our u-boot code or kernel code to disable these pull-downs. Both pins are tied externally (BOOT1 to VRTC via 10K, Boot0 to ground), so there is no need ... -
05:54 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
PCB Development: RE: VBACKUP Current Draw
- Mike,
I tested the AM3354 DDR3 module here as well and also saw the ~10uA current draw on VBACKUP.
One other thing I tried worked for me in lowering this current. On your module, it appears that you have the PMIC BOOT0 input tied ... - MW 05:25 PM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: VBACKUP Current Draw
- Hi Mark,
For the DDR2 modules, I'm pretty sure you need the -1C revision for the fix. However, the AM3354 DDR3 module should have the RTC fix already applied. I tested the first prototypes here and was able to see 10 uA on them as o... -
05:07 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
PCB Development: RE: VBACKUP Current Draw
- Hi Mike,
Thanks for the quick response. I believe I have modules covered in the errata. Of the three modules I've tested with, one is an 80-000444RC-1-D and the other two are 80-000509RL-1B.
I also have one of the AM3354 DDR3 mod... - MW 04:08 PM MitySOM-335x (ARM Cortex-A8 Based Products) PCB Development: RE: VBACKUP Current Draw
- Hi Mark,
We need to confirm what revision of module you have (there was Errata on earlier modules where the VBACKUP draw is quite high). Can you please get the 80- number off the module?
Check the "Module Revision History Page":ht... -
03:54 PM
MitySOM-335x (ARM Cortex-A8 Based Products)
PCB Development: VBACKUP Current Draw
- I am attempting to replicate the VBACKUP current draw information you supplied in the Hardware Design section of the wiki. I have a 3359-GX-226-RC module on the MityARM development board. I removed the battery (which was dead by the wa...
- MF 11:48 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SPI NOR Flash memory map
- You are correct, Mike. The flash does have to be erased before writing. Here is a more fleshed out version of my code. It includes some checking for valid data before reading using a header, which others may not need but you get the id...
- MW 11:13 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SPI NOR Flash memory map
- BTW:
It's not entirely clear to me if the write routine above will work properly. I don't know for sure, off-hand, if the driver is smart enough to do a FLASH erase prior to the write. And if it does, be aware that you will be erasi... - MW 11:11 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SPI NOR Flash memory map
- The SPI partitions are defaulted in the board-mityomapl138.c file in arch/arm/mach-davinci in the spi_flash_partitions[] structure. This is where the kernel is getting these values.
If you want the partitions to show up right in MTD,... - FW 10:55 AM MityDSP-L138 (ARM9 Based Platforms) Software Development: RE: SPI NOR Flash memory map
- Please allow me to chime in with a similar question... I have "reorganized" the upper part of the spi nor flash on my mityDspL138 module as I have a Linux kernel that is larger than the original allocation. I have modified the uboot envi...