Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

11/10/2023

JC 06:20 PM PCB Development: RE: Munti-function OMAP pins

Note if you developing a custom baseboard, I'd recommend sending it to support@criticallink.com to have it reviewed.
Also review the https://www.criticallink.com/wp-content/uploads/2014/01/MityDSP-L138-Carrier-Board-Design-Guide.pdf Jonathan Cormier

JC 06:18 PM PCB Development: RE: Munti-function OMAP pins

Any gpio can be used as a spi chip select.
Examples:
https://support.criticallink.com/gitweb/?p=linux-davinci.git;a=blob;f=arch/arm/mach-davinci/baseboard-industrialio.c;h=3e045a6afef77e706dbe3e09ca511cb28b7e526c;hb=refs/heads/mityds... Jonathan Cormier

RS 03:49 PM PCB Development: Munti-function OMAP pins

Hello,
I would like to use the SPI1 on the OMAP with two separate devices are the pin functions in the critical link datasheet table 1 exhaustive?
For instance, could I use pin 61 as SPI1_SCS[5]? The OMAP documentation has it liste... Rachel Shaska

11/06/2023

JC 06:22 PM PCB Development: RE: MityDSP-L138F Boot issue, I2C0 (PCB Dev Post)

Jon Cox wrote in message#6539:
> Jonathan,
> ...
At this point in the boot, we've already read the eeprom and the pmic is all setup. The i2c0 bus becomes a lot less crucial from the SOMs perspective. I don't think an i2c issue would c... Jonathan Cormier

JC 03:36 PM PCB Development: RE: MityDSP-L138F Boot issue, I2C0 (PCB Dev Post)

Jonathan,
Thanks for taking a look at the logs.
This is an issue we have been having in parallel to the I2C issues. Good news is the updated kernel does seem to experience much less I2C hanging than previously...now I believe the o... Jon Cox

JC 02:50 PM PCB Development: RE: MityDSP-L138F Boot issue, I2C0 (PCB Dev Post)

Jon Cox wrote in message#6537:
> Jonathan,
> ...
Hi Jon, Is this still related to the i2c failures you were talking about or is this a different issue?
>
> ...
Unpacking did finish, looks like it got stuck after the kernel was start... Jonathan Cormier