Tim Woodham

iMX28 SPI multipble Chip select

Discussion created by Tim Woodham on Oct 24, 2011
Latest reply on Aug 15, 2014 by Monica CHIOSA

Hi All,

 

I've been working with the SPI and have it working correctly for SPI2 and SPI3 which is great using the SPIDEV driver which exposes, /dev/spidev1.0 and /dev/spidev 2.0.  But whatever I do I can only get CS0 to be available, the following CS1 and CS2 won't appear as SPIDEV ports.  I've set the MAX devices from 1 to 3 and the load of the drivers notes that it finds 2 CS per SPI port but the spidev driver won't attached.

 

I've noticed on the forums.freescale.com site that someone else has come across this issue where they had trouble exposing the other 2 chip selects of the 3 that are supposed to be available.  If anyone has any experience that could assist, i'd be happy to hear.

 

forums.freescale.com SPI links

http://forums.freescale.com/t5/i-MX-Microprocessors/i-MX28-and-SPI-running-linux-2-6-35-3/td-p/80427

and

http://forums.freescale.com/t5/i-MX-Microprocessors/using-spi-with-spidev-on-imx28-evk/td-p/77725

 

I'm working with the iMX28 2.6.35 freescale EVK ltib image.

 

Thanks,.

Tim

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