05.10.2020 10:13, Thierry Reding пишет: ... > Have you also seen that sun50i-iommu does look up the SMMU from a > phandle using of_find_device_by_node()? So I think you've shown yourself > that even "modern" drivers avoid global pointers and look up via > phandle. I have no problem with the lookup by phandle and I'm all for it. It's now apparent to me that you completely missed my point, but that should be my fault that I haven't conveyed it properly from the start. I just wanted to avoid the incompatible DT changes which could break older DTs + I simply wanted to improve the older code without introducing new features, that's it. Anyways, after yours comments I started to look at how the interconnect patches could be improved and found new things, like that OPPs now support ICC and that EMC has a working EMC_STAT, I also discovered syscon and simple-mfd. This means that we won't need the global pointers at all neither for SMMU, nor for interconnect, nor for EMC drivers :)
