i.MX ProcessorsのトピックMainline Kernel V4 for iMX28

Mainline Kernel V4 for iMX28

michaelkoelbl — Wed, 01 Jul 2015 06:45:15 GMT

We want to change from Freescale's 2.6 kernel to Mainline kernel. As now V4.x is available my question: Has anyone successfully got a V4 kernel running? Is there an instruction available? Or should we use V3.x instead?

We have a custom board based on the EVK.

Re: Mainline Kernel V4 for iMX28

jörg_krause — Fri, 03 Jul 2015 05:01:56 GMT

Without any difficulties we have a custom i.MX28 board running with Linux Kernel 4.0.x. The Freescalers are very active in developing the mainline Kernel :smileyhappy:

Re: Mainline Kernel V4 for iMX28

michaelkoelbl — Mon, 06 Jul 2015 16:06:53 GMT

Hello Jörg,

can you tell me which bootloader (and which version) you're using?

Thanks from Bavaria

Re: Mainline Kernel V4 for iMX28

lategoodbye — Mon, 06 Jul 2015 17:32:35 GMT

Hello Michael,

the current mainline kernel support most of the features in Freescale 2.6.35 downstream kernel.

I suggest to use the Linux 4.1 because it will get longterm support in the near future.

In case you want to migrate from the old downstream kernel, you will need to build a new BSP for the custom board based on Device Tree.

Since your design bases on EVK you could copy arch/arm/boot/dts/imx28-evk.dts and modify it.

Regards

Stefan

Re: Mainline Kernel V4 for iMX28

jörg_krause — Mon, 06 Jul 2015 19:50:04 GMT

We're using U-Boot version 2015.01 - but 2015.04 is also appropriate.

Re: Mainline Kernel V4 for iMX28

michaelkoelbl — Wed, 08 Jul 2015 08:14:57 GMT

Hello Jörg,

our problems result from using an old/wrong bootloader as we made there some changes due to our requirements. So to all who want porting to a newer 3.x/4.x kernel the advice take the appropriate bootloader.