linux-kernel - Re: [PATCH] pata_hpt3x2n: fix overclocked MWDMA0 timing

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Date:	Fri, 27 Nov 2009 22:47:49 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pata_hpt3x2n: fix overclocked MWDMA0 timing

Hello, I wrote:

>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
>> ---
>> Sergei, XFER_UDMA_5 timing also looks suspicious,
>> please take a look when you have a minute, thanks.

>    Yeah, but it's the same as XFER_UDMA_4, so actually underclocked... 
> However, it matches what the HPT371N datasheet and the vendor drivers 
> have. The 'hpt366' driver uses more speedy mode, with 22.5 ns cycle. ;-)

    I have just verified: this driver has always used this timing 
historically, at least for HPT372+ chips.

MBR, Sergei

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