On Thu, Mar 17, 2022 at 04:33:09AM -0400, gene heskett wrote: > On Thursday, 17 March 2022 03:09:13 EDT you wrote: > > Greetings rt-kernel-users; > > > > I managed to trace thru git.kernel.org until I found the above rebase. > > Downloaded it, moved it to the rpi4, and unpacked it. > > > > But to build it on an rpi4b for armhf, needs a bcm2711-defconfig, and > > it is not there in this tarball. RPi4 was released in 2019, while v4.19 got released in October 2018. Hence the upstream v4.19 kernel never had support for the RPi4 as far I can tell. > And this one has also lost the bcm2711 support. > Please advise. It sounds very likely that you are running a downstream kernel for which RPi4 support was retrofitted. Nothing lost in upstream stable or stable-rt kernels. If you want to run upstream kernels, I suggest you pick a newer kernel which supports RPi4.
