linux-kernel - Re: Serial custom speed deprecated?

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Message-Id: <1156457501.3007.193.camel@localhost.localdomain>
Date:	Thu, 24 Aug 2006 23:11:41 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"linux-os (Dick Johnson)" <linux-os@...logic.com>
Cc:	Krzysztof Halasa <khc@...waw.pl>,
	David Woodhouse <dwmw2@...radead.org>,
	Stuart MacDonald <stuartm@...necttech.com>,
	linux-serial@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Serial custom speed deprecated?

Ar Iau, 2006-08-24 am 16:43 -0400, ysgrifennodd linux-os (Dick Johnson):
> at 75 and increases by powers-of-two. This is because the hardware
> always had fixed clocks with dividers that divided by powers-of-two.
> What is the claim for the requirement of strange baud-rates set
> as an integer of dimension "baud?" Where does this requirement
> come from and what devices use these?

A lot of chips will do all sorts of interesting speeds such as 31.5Kbit
because today the clocks are themselves quite configurable.


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