Munti-function OMAP pins
Added by Rachel Shaska about 1 year ago
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_SCS5? The OMAP documentation has it listed as a spi CS driver as one of the multi-functions, but critical link only has the UART2/I2C1
If not what would you recommend instead?
Thank you!
Replies (2)
RE: Munti-function OMAP pins - Added by Jonathan Cormier about 1 year ago
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/mitydsp-linux-v3.2#l360
https://support.criticallink.com/gitweb/?p=linux-davinci.git;a=blob;f=arch/arm/boot/dts/mitydsp-l138-industrialio.dts;h=6bd6619ce3893bda458fd3233165b90f35675da8;hb=refs/heads/linux4.19_wip#l196
RE: Munti-function OMAP pins - Added by Jonathan Cormier about 1 year ago
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