On 09/29/2017 10:33 AM, Robert P. J. Day wrote: > > i was just looking at using latest LEDE to define a couple new > IMX6QDL targets, and after a few minutes, it looks as if, at least to > get a minimal bootable system and as long as i'm not doing anything > drastically weird, it should be wickedly simple and i just want to > verify that. > > it's all based on the fact that, with the current kernel, the only > selection you need to make is CONFIG_SOC_IMX6Q, which will build a > suitable kernel, whereupon the file arch/arm/boot/dts/Makefile > contains the directive: > > dtb-$(CONFIG_SOC_IMX6Q) += \ > ... over 100 target dtb files ... > > under the circumstances, given that that single kernel is compatible > with that many targets, it would appear that, as long as i don't care > that 100+ other dtb files will be compiled, i can just add, under the > LEDE directory target/linux/imx6/files-4.9/arch/arm/boot/dts, a couple > new .dts files, like: > > acme_coyote_1.dts > acme_coyote_2.dts > > and that's it. > > of course, there might be enhancements down the road but, for now, > just to get something bootable, it seems all i need to do is patch a > couple entries into arch/arm/boot/dts/Makefile, and add the dts files. > > am i understanding this correctly?
As far as the kernel and DTS build is concerned that is pretty much all that is needed, you will need a patch to arch/arm/boot/dts/Makefile to make sure that your DTS get built into a DTB AFAICT. You will probably need to pair the DTS file(s) with an appropriate change under target/linux/imx6/image/Makefile that adds a new Device/acme-coyote1 and has at least a DEVICE_DTS := acme_coyote_1.dts to build a kernel with an appended DTB image. -- Florian _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
