topic Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code? in i.MX Processors

CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

pooja1401 — Wed, 10 Jul 2019 12:21:10 GMT

I am using imx-p9.0.0_2.0.0-ga version of IMX8QM MEK board. I want to enable the FLEXCAN resource . But in this version of code it is saying CAN resource is not owned. I am trying to enable in u-boot changing status is "okay" but it is disabling the resource by reverting back the status. It is saying "Disabled CAN ,resource id not owned". I have tried to enable this in IMX8QXP MEK board also with imx-p9.0.0_2.0.0-ga latest version but in this also it is saying "resource not owned".

Kindly help me How to own Flexcan resource in this version imx-p9.0.0_2.0.0-ga as we need to use the latest version of code.

FYI In previous version imx-p9.0.0_1.0.0-ga this CAN resource is enabled by default.

I have tried to use mx8qm.scfw.tcm.bin binary file of imx-p9.0.0_1.0.0-ga version of code with my version of code imx-p9.0.0_2.0.0-ga by replacing my mx8qm.scfw.tcm.bin file. But it is not booting with my code. I have read somewhere to change this scfw.bin file flexcan would work . So i have tried with working version of imx-p9.0.0_1.0.0-ga binary file. I am getting stuck at u-boot time.
Can anyone suggest or tell how this issue is resolved?

Can anyone tell how the flexcan resource is owned?

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

pooja1401 — Fri, 12 Jul 2019 08:33:29 GMT

Hi,

Can anyone please help me how to resolve this issue? How i can use other scfw.bin file with my code?

Please reply as soon as poosilobe.

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

Bio_TICFSL — Mon, 15 Jul 2019 17:33:47 GMT

Hello Pooja,

I guess FlexCAN resource was moved in SCFW since imx-p9.0.0_1.0.0-ga (L4.14.78 kernel).

Could you please check if the FlexCAN node is enabled (status = "okay") in kernel?

If so, could you please try setting the CAN resource as non-movable in SCFW source code and building it again?

Change:
rm_set_resource_movable(pt_boot, SC_R_CAN_0, SC_R_CAN_2, SC_TRUE);
To:
rm_set_resource_movable(pt_boot, SC_R_CAN_0, SC_R_CAN_2, SC_FALSE);

This line sets the CAN resources as non-movable so this won't be assigned to M4 owner.

Let me know if this works.

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

pooja1401 — Tue, 16 Jul 2019 09:58:23 GMT

Hi,

We found this one and changed the settings and it worked .

Thanks for your support .

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

jack-cap — Wed, 04 Dec 2019 07:27:31 GMT

how to build scfw_tcm.bin ? thanks!

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

pooja1401 — Wed, 04 Dec 2019 13:07:52 GMT

It has given on nxp site you can google it. or follow this link:-

https://community.nxp.com/docs/DOC-343178

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

jack-cap — Thu, 05 Dec 2019 07:52:10 GMT

modified as flows:

rm_set_resource_movable(pt_boot, SC_R_CAN_0, SC_R_CAN_2, SC_FALSE);

rm_set_resource_movable(pt_boot, SC_P_FLEXCAN0_RX, SC_P_FLEXCAN2_TX, SC_TRUE);

build scfw_tcm.bin and flash to emmc, I find that ifconfig command has can0-can2 result. but can send fail!

Is there anything else that needs to be modified ? Thanks.

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

manuelrodriguez — Fri, 14 Feb 2020 14:25:40 GMT

You need to delete the lines marking the resource AND pads as movable, OR change it to not mark it as movable, although that step is redundant since all pads/resources are marked as not movable at the top of the function:

/* Mark all resources as not movable */
BRD_ERR(rm_set_resource_movable(pt_boot, SC_R_ALL, SC_R_ALL,
SC_FALSE));
BRD_ERR(rm_set_pad_movable(pt_boot, SC_P_ALL, SC_P_ALL,
SC_FALSE));‍‍‍‍‍‍‍‍‍‍

I have updated the following document with an example doing this:

https://community.nxp.com/docs/DOC-341481

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

shabna_m — Tue, 10 Nov 2020 07:00:15 GMT

@Bio_TICFSL

I have downloaded imx-scfw-porting-kit-1.2 for imx-4.14.98-2.0.0_ga (is that the correct pair?) and

removed the following lines from the board.c:

BRD_ERR(rm_set_resource_movable(pt_boot, SC_R_CAN_0, SC_R_CAN_2, SC_TRUE));

BRD_ERR(rm_set_pad_movable(pt_boot, SC_P_FLEXCAN0_RX, SC_P_FLEXCAN2_TX, SC_TRUE));

Build the scfw_tcm.bin and copied it to the imx8qmek .

Checked flexcan is enabled in dts of u-boot as well as in kernel.

In menuconfig also, it is enabled.and run bitbake fsl-image-qt5-validation-imx.

Booted the Image from sdcard.

In the bootlog the following logs disappeared.

Disable can@5a8d0000, resource id 105 not owned

Disable can@5a8e0000, resource id 106 not owned

Disable can@5a8f0000, resource id 107 not owned.

But Ifconfig -a didn't list the can interfaces.

Please help me on this

Re: CAN resource is not owned in the IMX8QM MEK as i am using imx-p9.0.0_2.0.0-ga version of code?

shabna_m — Fri, 20 Nov 2020 05:27:57 GMT

@@Bio_TICFSL

Hi,

I think, for the working of CAN we need i2c@3b230000 also.

But it is disabled from the bootloader. Log as follows

Disable i2c@3b230000, resource id 308 not owned.

Could someone please help to get it enabled in the linux partition?