Add FLEXCAN HW Filter in CAN driver

[yogeshbsa89]

Hi,

I want to implement CAN HW filter in CAN driver.

As current can driver implementation is Network driver so can be accessed via socket.

So in this implementation CAN filter can be set at kernel level by using socket options.

I would like to use can Hw filter to reduce the load on CAN receive interrupt.

Since CAN is running at 1mbps. If load on CAN bus increases which increases the CAN interrupt rate in turn raise CPU load.

Please suggest which registers i need to change. if any patch is available for reference kindly share.   

Regards,

Yogesh 

[Jean-Philippe]

Hi Igor,

I have the same request for iMX6ULL. I really need to enable hardware filtering to avoid to many irq and kernel filtering.

Could you send me the patch ?

Thank you !

Jean-Philippe

[sudarkb]

Hi @Jean-Philippe ,

Will it be possible to share the FLEXCAN HW Filter patch.

Regards,
Sudar

[igorpadykov]

Hi Yogesh

patch was sent you via mail.

Best regards
igor

[jmeyerfluid]

Hello, I am running into a similar problem with too many CAN IRQ's on the IMX6, could you please send me the patch to enable FlexCAN hardware filtering, it should solve my problem as I only need to filter in a couple of messages on a very busy bus. Thanks!

[sudarkb]

Hi @igorpadykov ,

We would like to add the FLEXCAN HW Filter in CAN driver. Kindly share the patch for the same.

Regards,
Sudar

[thomas_mohnl]

Hi Igor,

I have the same topic: need HW filter in flexcan driver.

Please provide me also with the patch.

Thanks,

Thomas