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Re: Toshiba JMR 3927 working setup?

Subject: Re: Toshiba JMR 3927 working setup?
From: Atsushi Nemoto <>
Date: Tue, 08 Jan 2008 00:34:35 +0900 (JST)
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <>
On Mon, 7 Jan 2008 12:21:56 +0000, Ralf Baechle <> 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

Atsushi Nemoto

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