On Fri, May 26, 2023 at 01:22:15PM +0100, Jiaxun Yang wrote: > > > > 2023年5月26日 13:06，Conor Dooley <conor.dooley@xxxxxxxxxxxxx> 写道： > Hi all, > > [...] > My two cents here as Loongson64 maintainer. > > > > >>> To maintain compatibility with the existing devicetrees, should the old > >>> "loongson,ls2x-rtc" be kept in the driver? > >> > >> No, It seems that wildcards in compatible are not allowed." > >> loongson,ls2x-rtc" itself was part of this patch series at one time, > >> but apparently it is not the right way to describe these chips. > > > > Right, but it has been merged - you are deleting the driver that supports > > it after all - which means that any dtb with the old compatible will > > stop working. > It is perfectly fine to break DTB compatibility for Loongson64 systems > As they *only* use builtin dtb. Bootloader will only pass machine type information > and kernel will choose one dtb from it’s dtbs pool. Ah, that is good to know thanks! I think that should be mentioned in the commit messages for the next revision. Cheers, Conor.
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