Re: [PATCH 1/2] conf: machine: add BeagleBone Green Eco to KERNEL_DEVICETREE

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello Ryan,

Thanks for your review!

On Tue, 15 Jul 2025 08:52:03 -0500
Ryan Eatmon <reatmon@ti.com> wrote:

> NAK.  As has been mentioned several times on this list, we do not update 
> KERNEL_DEVICETREE directly.  As we support multiple kernel versions with 
> each branch, we cannot have a single KERNEL_DEVICETREE that works for 
> all kernel versions.
> 
> To that end we setup the KERNEL_DEVICETREE_PREFIX variable that will 
> pattern match and change the value for KERNEL_DEVICETREE based on the 
> available matching DTBs in the given kernel.  The only kernel version 
> that uses KERNEL_DEVICETREE is the mainline (aka latest stable) kernel. 
> And the value for this variable is automatically updated to include all 
> of the available DTBs in the mainline kernel at the time we update the 
> recipe to that version.
> 
> As the KERNEL_DEVICETREE_PREFIX already has an entry that will pick up 
> this new DTB when it is available, this change is not needed.
> 
> Right now this new DTB is only available on linux-next and has not made 
> it into any released kernels.

This DTB has also been backported into linux-ti, which is really what
we're interested in for now. Though probably that doesn't change
anything to your feedback, but I thought it was worth mentioning.

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com