[PATCH 02/13] arm: dts: add the Purism devicetree files

[Angus Ainslie]

On 2022-01-17 10:25, Tom Rini wrote:
> On Mon, Jan 17, 2022 at 09:51:24AM -0800, Angus Ainslie wrote:
>> 
>> There's 2 ways to solve the this I think.
>> 
>> 1) just use the latest librem5 dts file which is made up of 3 
>> different
>> dts(i) files.
>> 2) have a defconfig for each of the different PCB versions.
>> 
>> Do you have a preference ?
> 
> Can you tell the revision at run-time?  We have examples of boards that
> can and will include revA.dtb and revB.dtb and select the correct one 
> at
> run time (and start with something that works on revA and revB).

Due to some changes by NXP in the fuse section of the imx8mq we can't 
reliably detect some of the earlier revisions.

Going forward we should be able to using this

https://lists.denx.de/pipermail/u-boot/2021-November/468419.html

But that will be post r4 boards.