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Re: [RFC PATCH 0/2] hw/char/bcm2835_aux: Provide full 16550 UART support
From: |
Peter Maydell |
Subject: |
Re: [RFC PATCH 0/2] hw/char/bcm2835_aux: Provide full 16550 UART support |
Date: |
Mon, 23 Sep 2019 14:26:01 +0100 |
On Tue, 20 Aug 2019 at 13:34, Philippe Mathieu-Daudé <address@hidden> wrote:
> Since there has been some activity on the list asking about
> Rasberry PI USB support, I had a look a some previous unfinished
> work and rebased it to share, in case it helps hobbyist interested
> in improving these machines.
>
> This series is some proof-of-concept on improving the AUX UART
> support. See the commit description for various TODO/questions.
Apologies for not having got round to looking at this
RFC patchset sooner...
I think my question here would be -- is using the 16650 emulation
really the right thing? The BCM2835 documentation says
"The implemented UART is *not* a 16650 compatible UART. However
as far as possible the first 8 control and status registers are
laid out *like* a 16550 UART." That suggests to me that it would
be better to just improve our model of this hardware rather than
to replace it with a 16550 model which isn't what the hardware
really is.
thanks
-- PMM
- Re: [RFC PATCH 0/2] hw/char/bcm2835_aux: Provide full 16550 UART support,
Peter Maydell <=