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Re: Toshiba JMR 3927 working setup?

To: ralf@linux-mips.org
Subject: Re: Toshiba JMR 3927 working setup?
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Tue, 08 Jan 2008 00:34:35 +0900 (JST)
Cc: gregor.waltz@raritan.com, linux-mips@linux-mips.org
In-reply-to: <20080107122156.GB24700@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <477EB2EA.7060009@raritan.com> <20080105.234256.25910407.anemo@mba.ocn.ne.jp> <20080107122156.GB24700@linux-mips.org>
Sender: linux-mips-bounce@linux-mips.org
On Mon, 7 Jan 2008 12:21:56 +0000, Ralf Baechle <ralf@linux-mips.org> wrote:
> Well, is mmiowb() needed at all on JMR3927 - or R3000 in general?  Mmiowb()
> is meant to deal with weak ordering which only matters to a few SMP
> configurations.

Well, serial_txx9 driver (mis)use mmiowb() to flush write buffer.

But I was wrong.  TX39H2 core _has_ SYNC instruction.  So the patch I
mentioned is not required for JMR3927 platform anyway.  Sorry for
confusion.

---
Atsushi Nemoto

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