On Tue, Apr 02, 2019 at 08:37:23AM +0200, H. Nikolaus Schaller wrote: > I have learned from Linus that the problem with legacy spi-cs-high are mostly embedded > powerpc systems deployed between 2008 and 2013 where the boot-loader can't be > changed. And where the dts is not maintained on kernel.org. > IMHO it is very unlikely that they are running distro kernels. Or is there an example > of such a system? I used to work on embedded systems which were built by essentially bolting expansion cards onto standard reference systems, for some of them we shipped distro kernels with the extra hardware supported by adding modules. No idea if there's practical examples for specific PowerPC systems though. The burden when you're breaking things is more on showing that there isn't a problem anyway...
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