Messages in this thread |  | | Subject | Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 | From | Benjamin Herrenschmidt <> | Date | Thu, 06 Oct 2016 11:18:32 +1100 |
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On Tue, 2016-10-04 at 13:02 +0100, John Garry wrote: > Right, so I think Zhichang can make the necessary generic changes to > 8250 OF driver to support IO port as well as MMIO-based. > > However an LPC-based earlycon driver is still required. > > A note on hip07-based D05 (for those unaware): this does not use > LPC-based uart. It uses PL011. The hardware guys have managed some > trickery where they loopback the serial line around the BMC/CPLD. But we > still need it for hip06 D03 and any other boards which want to use LPC > bus for uart. > > A question on SBSA: does it propose how to provide serial via BMC for SOL?
Probably another reason to keep 8250 as a legal option ... The (very popular) Aspeed BMCs tend to do this via a 8250-looking virtual UART on LPC.
Cheers, Ben,
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