topic Re: which Linux version can be considered as a good starting point for imx8(mm) in i.MX Processors

which Linux version can be considered as a good starting point for imx8(mm)

Noel_V — Wed, 22 Sep 2021 06:27:08 GMT

Hello ,

I'm getting confused, I've been working on imx8mm for some time now, but after some "ESPI" problems in the tested kernel version imx_4.14.98_2.3.0 ( ref to https://source.codeaurora.org/external/imx/linux-imx/refs/heads) decided to try another version.

So I decided to take imx_5.4.70_2.3.0 and to give it a test, which gave other issues ( Power management issues, on WIFI , those PM issues are not here in 4.14.98_2.3.0 )

The question I now have is : what is the 'RECOMMENDED' version to start with for imx8(mm) ?

Is there any reason you can't take official kernel version ( on ftp.kernel.org) , when looking into the dts files, I see that a lot of imx8 dts files are there (in the official kernel version)

Thanks & Best regards,

Noel

Re: which Linux version can be considered as a good starting point for imx8(mm)

Rita_Wang — Wed, 22 Sep 2021 07:57:33 GMT

For the version Linux 4.14.98_2.3.0 you choose, it is not the GA release BSP version for the i.MX8MM so do not use it for the i.MX8MM.

From the L5.4.24_2.1.0 version, the Wi-Fi/Bluetooth wireless technology support the NXP 88W8987.

So here recommend you to use the GA release BSP version in our website:https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab.

If you are using the old version board with Murata 1PJ (QCA9377-3) Wi-Fi/Bluetooth on i.MX 8M Mini, you can choose the L5.4.24_2.1.0 version BSP.

If you are using the newest board, you can choose the newest BSP version released in our website.

Re: which Linux version can be considered as a good starting point for imx8(mm)

Noel_V — Wed, 22 Sep 2021 08:39:28 GMT

Hello,

Thanks for the answer, but I'm still confused

NOTE: I'm NOT working/testing on a EVK-kit, but on a an own CUSTOM-design (with the IMX8mm).

I still don't get the clue, on how to decide, what to take as a 'good' starting point for the kernel.

How is naming on https://source.codeaurora.org/external/imx/linux-imx/ to be interpreted ? (GA / imx-rel... etc).

Why is the official ftp.kernel.org version no good to start with ?

Regards Noel

Re: which Linux version can be considered as a good starting point for imx8(mm)

Rita_Wang — Wed, 22 Sep 2021 09:31:49 GMT

Recommend you use the version released in our website https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab, as the released version are with the Full cycle tested and GA quality. You can choose the version you need, as you are using the board design yourself, it depend on your hardware design. You need do porting.