Arnd Bergmann <a...@arndb.de> writes: > On Thu, May 18, 2017 at 7:36 AM, Michael Ellerman <m...@ellerman.id.au> wrote: >> Borislav Petkov <b...@alien8.de> writes: >> >>> Top-posting so that the PPC list can see the whole patch below. >>> >>> Since I don't know PPC, let me add PPC ML to CC for a confirmation this >>> change is correct. >>> >>> Which brings me to the tangential: this driver is from 2006-ish and >>> is for some "Marvell MV64x60 Memory Controller kernel module for PPC >>> platforms". If you're going to touch it, then you should test on the PPC >>> hardware too, so that you don't break the driver there. >>> >>> Unless that hardware is obsolete now and we don't care and, and ..? >>> >>> Maybe someone has some insights... >> >> Not really sorry. >> >> I don't have one of those boards, so I can't test. Maybe someone else on >> the list does? >> >> I'd err on the side of the PPC hardware being obsolete and no one really >> caring. If the driver is helpful on ARM then we may as well use it >> there, if we can also avoid breaking it on PPC then great. > > I never had one myself, but tried to figure out what is still there to be > supported. In 2014, we removed one platform (PrPMC2800) that was > obsolete. There were eight boards that didn't make the cut from > arch/ppc32 to arch/powerpc. The C2K is the last one and it was > added in 2008 with this comment: > > Support for the C2K cPCI Single Board Computer from GEFanuc > (PowerPC MPC7448 with a Marvell MV64460 chipset). > All features of the board are not supported yet, but the board > boots, flash works, all Ethernet ports are working and PCI > devices are all found (USB and SATA on PCI1 do not work yet). > > Part 3 of 5: driver for the board. At this time it is very generic > and similar to its original, the driver for the prpmc2800. > > The original submitter never followed up on it and neither the > board code not the DTS was ever updated to include additional > features, so I assume it only got worse from there. > > According to https://www.abaco.com/products/c2ka-compactpci-sbc > the end-of-life date for the product was in 2015, presumably 10 years > after it got introduced. > > This is definitely obsolete by now, and given the missing features > I would assume that nobody is running mainline kernels on it and > it can be removed.
Great, thanks for doing all that digging. I'll cook up a patch to remove c2k next week. Then we can drop CONFIG_MV64X60 from PPC and see where that leaves things, depending on what's useful on ARM. cheers