From: "Jung-Ik (John) Lee" <jilee@google.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: sshtylyov@ru.mvista.com,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
Jeff Garzik <jgarzik@pobox.com>,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] libata:ide: Fix udma timings of pdc202xx_old controllers
Date: Thu, 17 Sep 2009 16:54:09 -0700 [thread overview]
Message-ID: <8b5805ff0909171654i515c832bm570db9bd5936b11a@mail.gmail.com> (raw)
In-Reply-To: <20090918002322.54099f94@lxorguk.ukuu.org.uk>
On Thu, Sep 17, 2009 at 4:23 PM, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> On Thu, 17 Sep 2009 16:02:31 -0700
> "Jung-Ik (John) Lee" <jilee@google.com> wrote:
>
>> From: John(Jung-Ik) Lee <jilee@google.com>
>>
>> Fix udma timings of pdc202xx_old controllers.
>> MB=1, MC=1 (0x20, 0x01) for all UDMA modes of pdc2026{57}.
>
> On what documentation is this based ?
I have two documents, 20265, and 20267, and both need to set to the
same single value for all UDMA modes.
Doc 1:
PDC20265 Bus Mastering Ultra DMA PCI –ATA/ATAPI Controller
Specification Rev 2.0
#7.17.2, Ultra DMA Data Transfer Speed list
For all Ultra DMA mode, MB, MC = 01h, 01h
Doc 2:
PDC20267 Bus Mastering Ultra DMA PCI –ATA/ATAPI Controller
Specification Rev 2.0
#7.17.2, Ultra DMA Data Transfer Speed list
For all Ultra DMA mode, MB, MC = 01h, 01h
Are there other pdc202xx old controllers that are different?
-John
>
> Alan
>
next prev parent reply other threads:[~2009-09-17 23:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-17 23:02 Jung-Ik (John) Lee
2009-09-17 23:23 ` Alan Cox
2009-09-17 23:54 ` Jung-Ik (John) Lee [this message]
2009-09-18 11:52 ` Sergei Shtylyov
2009-09-20 19:48 ` Bartlomiej Zolnierkiewicz
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8b5805ff0909171654i515c832bm570db9bd5936b11a@mail.gmail.com \
--to=jilee@google.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=bzolnier@gmail.com \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=sshtylyov@ru.mvista.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®