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

07/27/2015

11:47 AM Software Development: RE: Load DTB from NAND

There are several ways that data can have bitflips. See the below link for some cases. The minimum ECC level specifi... Jonathan Cormier

04:35 AM Software Development: RE: Load DTB from NAND

Hi Jonathan,
Thanks for the commands.
Could you please verify whether the erase blocks are only used and can be... Angelos Spanos

07/24/2015

10:59 AM Software Development: RE: Load DTB from NAND

Angelos Spanos wrote:
> Hi Jonathan,
>
> Jonathan Cormier wrote:
> > Note that u-boot does need to be setup to u... Jonathan Cormier

05:00 AM Software Development: RE: Load DTB from NAND

Hi Jonathan,
Jonathan Cormier wrote:
> Note that u-boot does need to be setup to use the backup environment.
... Angelos Spanos

07/23/2015

11:36 AM Software Development: RE: Load DTB from NAND

I believe the backup partition is preferable, since u-boot will save the env in both so if one becomes corrupt there ... Jonathan Cormier

11:22 AM Software Development: RE: Load DTB from NAND

OK. So should I increase the partition by 256KiB or should I introduce the partition "NAND.u-boot-env.backup1"? Angelos Spanos

11:20 AM Software Development: RE: Load DTB from NAND

For the 512MB Nand an erase block is 256KB. It was 128KB on the 256MB Nand. Jonathan Cormier

11:16 AM Software Development: RE: Load DTB from NAND

Jonathan Cormier wrote:
> Angelos Spanos wrote:
> > Please let me know if you see any potential problems with this ... Angelos Spanos

10:48 AM Software Development: RE: Load DTB from NAND

Angelos Spanos wrote:
> Hi Jonathan,
>
> Many thanks for your pointers.
>
> I have created a tested solution w... Jonathan Cormier

09:38 AM Software Development: RE: Load DTB from NAND

Also, the solution you proposed should also work, but I haven't got around to testing it yet. If I do I will let you ... Angelos Spanos

09:36 AM Software Development: RE: Load DTB from NAND

The following commands were used for flashing the NAND from U-Boot:... Angelos Spanos

09:32 AM Software Development: RE: Load DTB from NAND

Hi Jonathan,
Many thanks for your pointers.
I have created a tested solution with a different partition scheme.... Angelos Spanos

09:21 AM Software Development: RE: Load DTB from NAND

We haven't gotten to testing the NAND support for the 3.14 kernel yet. Because of this I haven't looked at rearrangi... Jonathan Cormier

04:32 AM Software Development: Load DTB from NAND

Hi,
In the the text found here (https://support.criticallink.com/redmine/projects/armc8-platforms/wiki/UBIFS_Nand_... Angelos Spanos

07/22/2015

12:20 PM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Hi Jonathan,
I have just fixed it. The following changes were done:... Angelos Spanos

11:49 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Angelos Spanos wrote:
> Where is the Revision written? The Part Number is 80-00458RH-6
That is a Rev 6. So I'm n... Jonathan Cormier

11:40 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Jonathan Cormier wrote:
> Your welcome. I take this means you got 512MB Nand working. Were you able to use the bch... Angelos Spanos

11:36 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Your welcome. I take this means you got 512MB Nand working. Were you able to use the bch16 ECC? It would be helpfu... Jonathan Cormier

11:07 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

The problem as it is described on the subject of the ticket is now resolved.
I will probably open another ticket i... Angelos Spanos

06:50 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Attaching the latest am335x-mitysom.dts file with support for 512MB NAND. Angelos Spanos

06:16 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

With the following bootargs I can enter the filesystem:... Angelos Spanos

05:36 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

I have created a DTS file for the 512MB NAND. It is described below. Could you please confirm that the ... Angelos Spanos

07/21/2015

10:59 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Angelos Spanos wrote:
> ??The commented out section was copied from TI's evm device tree. I've attached a patch from... Jonathan Cormier

10:48 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

??The commented out section was copied from TI's evm device tree. I've attached a patch from our internal git which s... Angelos Spanos

10:38 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Angelos Spanos wrote:
> We are developping on a 3354-HX-X38-RC MitySOM. I am currently using the default am335x-mity... Jonathan Cormier

10:12 AM Software Development: RE: Flat Device Tree source file configuration for 512MB NAND

Adding the device tree source file used. Angelos Spanos

10:07 AM Software Development: Flat Device Tree source file configuration for 512MB NAND

We are developping on a 3354-HX-X38-RC MitySOM. I am currently using the default am335x-mitysom.dts file, which has t... Angelos Spanos