[U-Boot] i.MX8M layout, rephrased

[Peng Fan]

Hi Sergey,

> -----Original Message-----
> From: U-Boot [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Sergey
> Kubushyn
> Sent: 2018年12月18日 9:54
> To: U-Boot list <u-boot at lists.denx.de>
> Subject: [U-Boot] i.MX8M layout, rephrased
> 
> I'm looking at U-Boot master tree and u-boot-imx repository. What we have
> now is quite a mess for i.MX8M.
> 
> In master we have the following directories:
> 
>  	arch/arm/mach-imx/imx8
>  	arch/arm/mach-imx/mx8m
> 
>  	arch/arm/include/asm/arch-imx8
>  	arch/arm/include/asm/arch-mx8m
> 
> In u-boot-imx it is different:
> 
>  	arch/arm/mach-imx/imx8
>  	arch/arm/mach-imx/imx8m (vs ../mx8m in master)
> 
>  	arch/arm/include/asm/arch/arch-imx8
>  	arch/arm/include/asm/arch/arch-imx8m (vs ../mx8m in master)
> 
> The question is which one is going to make it in the master tree?

i.MX8/8X/8M are 3 soc families.
i.MX8/8X share similar architecture, so code mostly under imx8 or arch-imx8

i.MX8MQ/MM share similar architecture, so code mostly under imx8m or arch-imx8m.

> 
> The problem here is that files from those directories are referenced in
> multiple places and the "imx8m"/"mx8m" is all over in the header files and
> sources so once we decided on either naming one tree would have to make a
> lot of changes either adding or removing that 'i' before "mx8m".

For newer i.MX SoCs, we will add the "i" to represent i.MX brand.

> 
> Can anybody responsible tell _WHICH_ one is going to make it into the main
> source tree? Would it be better if we decide on it sooner than later (i.e.
> _NOW_) so we won't have to hunt it all over the tree later on?
> 
> I assume it should be "mx8m" as it is in master tree following suit for other
> flavors so it is u-boot-imx tree that has to be fixed.

http://git.denx.de/?p=u-boot/u-boot-imx.git;a=commit;h=3d145ff59d183850f11ba4157f03d05fc2fcb992
imx tree has switch to imx8m, and the patch will be merged to master tree, so the master will also switch
to imx8m.

> 
> 
> Another issue is that ARCH_IMX8 and ARCH_IMX8M are treated as different
> ARCHITECTURES in u-boot-imx unlike e.g. IMX6 that is treated as one ARCH
> with different flavors (SX/DL/Q/whatever). That makes a lot of unnecessary
> confusion and, IMHO, should be somehow cleaned up to make it consistent.

IMX8 and IMX8M uses totally different architecture.

Regards,
Peng.

> 
> 
> Can anybody tell something on this? Any thoughts, ideas, recomendations?
> 
> ---
> **************************************************************
> ****
> *  KSI at home    KOI8 Net  < >  The impossible we do immediately.  *
> *  Las Vegas   NV, USA   < >  Miracles require 24-hour notice.   *
> **************************************************************
> ****
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.
> denx.de%2Flistinfo%2Fu-boot&data=02%7C01%7CPeng.Fan%40nxp.co
> m%7Cf91122ecf133487aa45608d6648bc117%7C686ea1d3bc2b4c6fa92cd99
> c5c301635%7C0%7C0%7C636806948762235491&sdata=202DqjIQfSABs
> BtuLUN0QvbhadrtMP61mGnmH1QMUpI%3D&reserved=0