Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> writes: > On Tue, May 21, 2019 at 01:50:25PM +0200, Esben Haabendal wrote: >> Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> writes: >> >> > On Tue, May 21, 2019 at 01:11:08PM +0200, Esben Haabendal wrote: >> >> Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> writes: >> >> >> >> >> I will try ad hold back with this thread until you get back to it. >> >> > >> >> > Ok, I have no idea what is going on here, sorry. This is a really long >> >> > and meandering thread, and I can't even find the original patches in my >> >> > queue. >> >> > >> >> > So can you resend things and we can start over? :) >> >> >> >> Will do. >> >> >> >> > But note, using a mfd for a uart seems VERY odd to me... >> >> >> >> Ok. In my case, I have a pcie card with an fpga which includes 5 uart >> >> ports, 3 ethernet interfaces and a number of custom IP blocks. >> >> I believe that an mfd driver for that pcie card in that case. >> > >> > I believe you need to fix that fpga to expose individual pci devices >> > such that you can properly bind the individual devices to the expected >> > drivers :) >> >> Well, that is really out-of-scope of what I am doing here. > > Not really, if you have control over the fpga firmware (and odds are you > do), just fix that and instantly your device works with all kernels, no > need to change anything. > > Why not do this? Because I do not have control over fpga firmware. >> > Seriously, who makes such a broken fpga device that goes against the PCI >> > spec that way? Well, not so much as "goes against it", as "ignores all >> > of the proper ideas of the past 20 years for working with PCI devices". >> >> Might be. But that is the firmware I have to work with here, and I >> still hope we can find a good solution for implementing a driver without >> having to maintain out-of-tree patches. > > As this hardware will not work on any operating system as-is, why not > fix the firmware to keep from having to support a one-off device that no > one else would be crazy enough to create? :) Clearly, someone has been crazy enough. Hopefully, we can be smart enough to make Linux fit to it. /Esben
