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Date:   Mon, 1 Feb 2021 09:43:17 +0100
From:   Johan Hovold <johan@kernel.org>
To:     Joe Abbott <jabbott@rollanet.org>
Cc:     linux-usb@vger.kernel.org
Subject: Re: pl2303.c 110 baud not working
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On Sat, Jan 30, 2021 at 05:30:15AM -0600, Joe Abbott wrote:
>  Sorry it's been so long.  Busy.

No worries.

>  > So in any case, we'd need to key this off of the device type.
>  >
>  Yes, key off type as I can't find the relationship.  Windows
>  uses a8 a6 01 80 02 07  for any request near 110  and switches
>  to direct encode for anything near 75 or 150.

Ok, thanks for checking.

>  > I noticed that
>  >
>  >         12000000 / 0x1a6a8 ~= 110.9
>  >
>  > Possibly just a coincidence, especially as 0x1aa22 would be closer
>  > match. But perhaps you can try a few more rates not in baud_sup and see
>  > if you can figure it out.
> 
>  Coincidence. 0x01aa22 doesn't work. Not even close.
> 
>  I had to give up.  Too many other things to do and hard coding
>  is working for me.

I fully understand. Let me check with Prolific and see if they are
willing to shed some light on this.

Johan