I'm having difficulties interfacing with flexcan on my imx6q.

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I'm having difficulties interfacing with flexcan on my imx6q.

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briannorman
Contributor II

I'm new here, so if anyone could point me in the right direction, I'd appreciate it. 

Having difficulties working with flexcan on my imx6q.  I have a Sabre lite demo board, rev-d.  I downloaded the IMX6DQRM.  According to it, during initial setup, I should be able to enable RX FIFOs by asserting the RFEN bit in the MCR.  I am unable to set it.  Also, I am unable to assert the SOFT_RST bit.  When i attempt to, the imx6 stops and wont respond to anything.  I'm getting the feeling that I may have the wrong reference manual.  How do i figure out if i have the right one and if i don't, how do i find the right one.

I'm pretty sure I'm talking to the flexcan.  Upon powerup, I can see the indicated reset value in the MCR.  I have downloaded example device drivers, and they support the architecture in the reference manual.  Unfortunately I can't find any drivers for my OS(Integrity) so I'm looking at building my own.

Thanks for any suggestions

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briannorman
Contributor II

Figured out my problem if anyone cares.  I didn't have the CAN clocks enabled in the CCM registers.