[PATCH v2 0/4] arm64: Initial support for Texas Instrument's J7200 Platform

Tero Kristo t-kristo at ti.com
Tue Sep 8 05:55:29 EDT 2020


On 08/09/2020 02:48, Nishanth Menon wrote:
> On 19:53-20200907, Lokesh Vutla wrote:
> 
> [... I should have responded to the correct patch..]
>>> Besides yaml and compatibility acks, there are a few ancillary
>>> comments to fix up.. Kconfig -> I think we should either stay with
>>> status quo and create a new config option per SoC OR rename the
>>> config to be generic (using j7200 with j721e SoC config is not very
>>
>> Please suggest your preference here. I guess separate defconfig for J7200?
> 
> 
> I was just scanning through remaining arm64 additions to see what others have
> done. We seem to have two options here:
> a) Just use ARCH_K3 and no specific SoC configs
> b) Specific SoC configs
> In both cases, use += instead of \ to incrementally add dtbs
> 
> We have been going with (b) so far, Tero: any specific preference here?
> 
> (a) has the aspect of simplicity and reduced dependencies.
> (b) Allows downstream kernels to save just a little bit and focus purely
>      on SoC of interest.

If possible, I think we should aim for a) at least for now. We have the 
soc type detection code in place anyways that can be used on driver 
level. Creating compile time flags should be avoided imo as much as 
possible and just go with runtime detection. I can't see why saving 
maybe a megabyte of memory with SoC specific kernels would be of any 
importance on K3 arch with the memory amounts we have in our disposal.

-Tero
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki



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