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

10/21/2014

JC 10:28 AM Software Development: RE: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

SPI:
I'm not sure what you mean by using the spi bus to handle the 8-bit data bus.
If you want raw access to the spi device then you need to modify the baseboard file. The 3.2 kernel we are using doesn't use device tree, instead the... Jonathan Cormier

JC 10:16 AM Software Development: RE: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

As Alex mentioned the GPMC bus is used for an on-SOM nand memory. The GPMC bus allows multiple devices to use the bus as long as they only communicate when their chip select is high. Does your device have someway to ignore communicatio... Jonathan Cormier

10/20/2014

AB 04:55 PM Software Development: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

Posting this on behalf of a customer:
The interface to their networking chip and other peripheral boards on their current motherboard is through memory mapped I/O. The customer would like to recreate this with the MitySOM-335x and is ... Alexander Block

10/01/2014

MK 02:31 AM PCB Development: RE: Spurious Reboot Debug

Yes. Where do I send it?
Michael Karasoff

09/26/2014

MW 09:11 PM PCB Development: RE: Spurious Reboot Debug

Would you be willing to share (privately, not on the forum) your baseboard schematic?
-Mike Michael Williamson

MK 08:19 PM PCB Development: RE: Spurious Reboot Debug

Michael,
Thanks for the replay. No problem with the many questions.. I'm kind of at a loss tracking down the issue, so any tips can help.
_Are these MityARM-3359s? What is the model number? Do you also have a couple of serial num... Michael Karasoff

09/24/2014

MW 05:59 PM PCB Development: RE: Spurious Reboot Debug

Hi Mr. Karasoff,
Are these MityARM-3359s? What is the model number? Do you also have a couple of serial numbers of the modules that are exhibiting the problem?
Does the reboot issue track the SOM or the Carrier board? E.g., if y... Michael Williamson

MK 05:28 PM PCB Development: Spurious Reboot Debug

Hi,
I am having an intermittant issue with the MityARM on some (not all) of our custom carrier boards - The processor has spurious reboots. The processor will boot and run Linux fine, then it reboots on its own, starting at the bootl... Michael Karasoff