On 11/01/2016 20:06, Peter Hurley wrote: > I don't have enough information to suggest what you "should" use > here. > > Is this going to be a shipping product? > Is it single-core? > etc. > > And what is your purpose for outputting early boot information > before loading the serial driver which does provide console output? I'm not sure exactly which board Sebastian has in mind, but I've been using the SERIAL_8250_RT288X driver on my Tango4 board. Note: calling the UART driver "Au1x00/RT288x" is a bit of a misnomer, as these are names of SoCs using that distinct register layout. The actual IP is probably the 16550-compatible Palmchip BK-3103. https://sites.google.com/a/palmchiptech.com/palmchiptech/product-services/hardware-services/ip-cores/bk-3103 (Not sure that this website is legitimate, though.) When I need earlyprintk support, I use this patch from Mans: http://thread.gmane.org/gmane.linux.kernel/2081016 Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html