Hi Geert, On Monday, August 06, 2018 1, linux-sh-owner@xxxxxxxxxxxxxxx wrote: > Deriving the proper regshift value from the register block size is > fragile (it may have been rounded up in DT, and the mapping granularity > is usually PAGE_SIZE anyway), and turned out to be inappropriate for > earlycon support (the size is not easily available). > > On DT systems, derive it from the compatible value instead. > This requires adding an entry for RZ/A2 serial ports, which use an > atypical regshift value. I had a simple patch to add support for CONFIG_DEBUG_LL for RZ/A2 because earlycon never worked because of RZ/A2's different register locations. I'll have to see how things change (better?) with this patch. Chris
