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From: Grant Grundler <grundler@dsl2.external.hp.com>
To: Enrik Berkhan <Enrik.Berkhan@planb.de>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] serial baud_base, high baud rates and divisors
Date: Sat, 09 Feb 2002 23:50:20 -0700	[thread overview]
Message-ID: <20020210065020.DCE6A482A@dsl2.external.hp.com> (raw)
In-Reply-To: Message from Enrik Berkhan <Enrik.Berkhan@planb.de> of "Fri, 08 Feb 2002 12:14:05 +0100." <20020208121405.C5128@electra.intern.planb.de>

Enrik Berkhan wrote:
> But enhancing the test for doubly assigned ports to
> 
>       if ((rs_table[i].port == port) &&
>           (rs_table[i].iomem_base == req->iomem_base))
> 
> might be ok. This code can be found in register_serial().

Yeah - you are right.

> BTW, drivers/gsc/serial.c does no request_mem_region(). Is this in-
> tentional?

probably. Check if an entry for serial exists in /prc/iomem.
At one point, the device discover code was changed to automatically
do the request_mem_region() devics firmware told us about.

> The hardball ers states a 7.3728MHz (== 16 * 460800) baud rate clock,
> which confirms the output of my DMM. So we would need a table holding
> the baud_base for each device?

Dunno. We might given different generations of HW.

grant

  reply	other threads:[~2002-02-10  6:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-07 12:08 [parisc-linux] serial baud_base, high baud rates and divisors Enrik Berkhan
2002-02-07 14:41 ` Helge Deller
2002-02-07 16:31   ` Enrik Berkhan
2002-02-07 16:36   ` Grant Grundler
2002-02-07 16:31 ` Grant Grundler
2002-02-08 11:14   ` Enrik Berkhan
2002-02-10  6:50     ` Grant Grundler [this message]
2002-02-10 15:36       ` Matthew Wilcox

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