topic Re: Add FLEXCAN HW Filter in CAN driver in i.MX Processors

Add FLEXCAN HW Filter in CAN driver

yogeshbsa89 — Tue, 12 Oct 2021 11:39:04 GMT

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

Re: Add FLEXCAN HW Filter in CAN driver

igorpadykov — Thu, 14 Oct 2021 06:57:38 GMT

Hi Yogesh

patch was sent you via mail.

Best regards
igor

Re: Add FLEXCAN HW Filter in CAN driver

thomas_mohnl — Mon, 15 Nov 2021 11:05:38 GMT

Hi Igor,

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

Please provide me also with the patch.

Thanks,

Thomas

Re: Add FLEXCAN HW Filter in CAN driver

Jean-Philippe — Tue, 24 May 2022 21:59:22 GMT

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

Re: Add FLEXCAN HW Filter in CAN driver

sudarkb — Tue, 12 Dec 2023 08:28:13 GMT

Hi @igorpadykov ,

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

Regards,
Sudar

Re: Add FLEXCAN HW Filter in CAN driver

sudarkb — Fri, 15 Dec 2023 11:40:27 GMT

Hi @Jean-Philippe ,

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

Regards,
Sudar

Re: Add FLEXCAN HW Filter in CAN driver

jmeyerfluid — Fri, 02 Feb 2024 20:46:21 GMT

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!

Re: Add FLEXCAN HW Filter in CAN driver

joefonseca — Mon, 17 Jun 2024 15:01:46 GMT

Hi Igor.

I am in the same situation. Could you email me the patch?

Thanks,
José

Re: Add FLEXCAN HW Filter in CAN driver

joefonseca — Tue, 18 Jun 2024 06:35:22 GMT

Hi, jmeyerfluid.

Has the patch been emailed to you before? If so, could you share it with me?

Thank you!