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From: Markku Pesonen <tourula@gmail.com>
To: Darren Stevens <darren@stevens-zone.net>
Cc: Tejun Heo <tj@kernel.org>, linux-ide@vger.kernel.org
Subject: Re: pata_atiixp regression in 4.11-rc1
Date: Tue, 28 Mar 2017 12:57:42 +0300	[thread overview]
Message-ID: <d9c9cb23-e67f-779d-240d-e02f7d87e405@gmail.com> (raw)
In-Reply-To: <49cdecb0846.6a8a0888@auth.smtp.1and1.co.uk>

On 28.03.2017 11:24, Darren Stevens wrote:
> Hello Tejun
>
> On 27/03/2017, Tejun Heo wrote:
>> From a431ecd2d459da3c91a612061f09eb422ffe78e2 Mon Sep 17 00:00:00 2001
>> From: Tejun Heo <tj@kernel.org>
>> Date: Mon, 27 Mar 2017 13:52:00 -0400
>> Subject: [PATCH] Revert "pata_atiixp: Don't use unconnected secondary
>>  port on SB600/SB700"
>>
>> This reverts commit 5946fdaee4ba449e8fbb5d403e1ed69437f916e8.
>>
>> The original commit's assumption that the secondary port is
>> unconnected turns out to be false.
>
> Not entirely. I based my patch on information in AMD's document
> 43366_sb7xx_bdg_pub_1.00.p

I found this in the AMD SB710 Databook, rev 1.60, p. 56:
"The integrated parallel ATA controller contains a single channel but
can be configured as primary or secondary channel."

The IDE connector on my Asrock 980DE3/U3S3 motherboard is configured as
the secondary channel. The primary channel is used by the optional
SATA-IDE emulation mode.

I don't know much about kernel programming, southbridges, or ata 
controllers, but I hope this bit of information helps.



  reply	other threads:[~2017-03-28  9:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-26  7:31 pata_atiixp regression in 4.11-rc1 Markku Pesonen
     [not found] ` <CGME20170327092244epcas1p18acab65df487d4813421302740fa946b@epcas1p1.samsung.com>
2017-03-27  9:22   ` Bartlomiej Zolnierkiewicz
2017-03-27 17:49     ` Tejun Heo
2017-03-27 17:55 ` Tejun Heo
2017-03-28  8:24   ` Darren Stevens
2017-03-28  9:57     ` Markku Pesonen [this message]
2017-03-28 15:58       ` Tejun Heo
2017-03-28 15:56         ` Darren Stevens

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