[PATCH 5/7] arm: mach-k3: am62x: Move board selection to mach-k3

[Andrew Davis]

On 11/2/23 3:55 AM, Francesco Dolcini wrote:
> Hello Andrew,
> 
> On Wed, Nov 01, 2023 at 03:35:28PM -0500, Andrew Davis wrote:
>> Currently each set of board targets from a vendor is selected inside
>> the board directory for that vendor. This has the problem of multiple
>> targets, one from each vendor, being selectable at the same time.
>> For instance you can select both TARGET_AM654_A53_EVM and
>> TARGET_IOT2050_A53 in the same build.
>>
>> To fix this we need to move the target board choice to a common location
>> for each parent SoC selection. Do this in arch/arm/mach-k3.
> 
> Is this oddity specific of ti k3 based board or is this a generic issue
> in u-boot? Asking to understand if a k3-specific fix is the correct one
> here.
> 

Some platforms/archs do it this way, others don't, so it is mixed. Right
now I'm just fixing mach-k3 but I agree it would be good to audit for this
u-boot wide.

Thinking more on this, what we really need is a consistent strategy for
selecting target boards in Kconfig. I'd like to keep as much vendor
specific stuff in the board/<vendor> dirs, but in this case we end up
with the problem in the commit message.

I think arch/x86/ has the right idea. We can have in arch/arm/mach-k3/Kconfig

config VENDOR_*

selections which lets you choose only one vendor. From there we would
only include the one board directory matching that SoC+vendor combo.
That way we could keep the target selection down in the board/ dirs so
you don't have to make changes in arch/arm/mach-k3 when adding new board.

If everyone is okay with that, I can make that change to this series.
Could be a template then for other arch and vendors.

Andrew