Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06

From	John Garry <john.garry@huawei.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06
Date	2016-10-06 15:40 +0200
Message-ID	<sph3Y-GK-9@gated-at.bofh.it> (permalink)
References	(2 earlier) <shjPk-27U-17@gated-at.bofh.it> <shq4p-6gS-15@gated-at.bofh.it> <snXK1-4oA-3@gated-at.bofh.it> <sowHL-2uG-13@gated-at.bofh.it> <sp4Jr-Xg-5@gated-at.bofh.it>
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On 06/10/2016 01:18, Benjamin Herrenschmidt wrote:
> 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,

I think we're talking about the same thing for our LPC-based UART.

John

>
>
> .
>

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Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 Jon Masters <jcm@jonmasters.org> - 2016-10-03 00:50 +0200
  Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 John Garry <john.garry@huawei.com> - 2016-10-04 14:10 +0200
    Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2016-10-06 02:30 +0200
      Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 John Garry <john.garry@huawei.com> - 2016-10-06 15:40 +0200

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