On Tue, Aug 30, 2022 at 09:38:57AM +0200, Ahmad Fatoum wrote: > Hello Sascha, > > On 30.08.22 09:32, Sascha Hauer wrote: > > Hi Ahmad, > > > > On Thu, Aug 18, 2022 at 07:19:45AM +0200, Ahmad Fatoum wrote: > >> The i.MX8MM exists in a Lite variant with no VPUs as well as Solo and > >> Dual variants with one or two cores respectively instead of the default > >> four. For i.MX6, we had a manual fixup taking care of deleting the > >> excess CPUs, but for e.g. the i.MX8MP, we have fuses for the M7, VPUs, CAN, > >> CAN-FD, ISPs, NPU, ... etc. Describing all that in the DT is overly verbose > >> as we need to take care not to rely on specific device node names that > >> should be disabled. There has been an upstream attempt to get a binding > >> for U-Boot to act on: > >> > >> https://lore.kernel.org/all/20220324042024.26813-1-peng....@oss.nxp.com/ > >> > >> This was refused by the DT maintainer, because any solution to this > >> problem should also be flexible enough to cover the case of partitioning > >> devices between the secure and normal world. > >> > >> There's a patch series upstream to describe a domain-controller binding > >> that allows a hypervisor to partition devices into domains. With the > >> naming generalized, this fits nicely the use case of gating devices > >> behind specific features: > >> > >> https://lore.kernel.org/all/3ca7cd75-4b62-2380-adb0-646bbeb64...@pengutronix.de/ > >> > >> This series does that. See the first two commit messages for details. > >> We use a barebox, prefix as the naming isn't set in stone, but the > >> intention > >> is to drop the prefix and potentially rename once an upstream binding is > >> approved. > > > > I am fine with this series. Is this still the way you want to have it > > merged or do you have an update? > > No updates, please apply series, except for last two RFC commits.
Did that. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
