From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: [PATCH] hpt366: fix HPT37x PIO mode timings (take 2)
Date: Sun, 9 Dec 2007 18:10:35 +0100 [thread overview]
Message-ID: <200712091810.36063.bzolnier@gmail.com> (raw)
In-Reply-To: <200712081838.10647.sshtylyov@ru.mvista.com>
On Saturday 08 December 2007, Sergei Shtylyov wrote:
> After looking into the HPT370 manual (now that I have it) and re-checking all
> the timing tables, here's what I have discovered:
>
> - at 33 MHz clock, PIO mode 0 timings turned to be overclocked, and all other
> PIO modes underclocked;
>
> - at 50 MHz clock, PIO modes 0 to 2 turned to be overclocked;
>
> - at 66 MHz clock, PIO mode 0 was overclocked too.
>
> Finally, the taskfile timing (matching PIO mode 0) turned to be overclocked at
> all clock frequencies (and in all manuals)...
>
> The new timings have been tested on HPT370 chip (at 33 MHz PCI clock) and on
> HPT371N chip (at both 50 and 66 MHz DPLL clock).
>
> Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
applied
> ---
> Many PIO modes at 55/66 MHz (as well as MDDMA modes at all clocks) are also
> underclocked but I decided not to touch them, at least for the time being.
> The patch is against the Linus' tree, with PIO0 setup time correct this time...
Since it is against Linus' tree I assume that it is safe enough to be merged
for 2.6.24, right?
next prev parent reply other threads:[~2007-12-09 18:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-08 15:38 [PATCH] hpt366: fix HPT37x PIO mode timings (take 2) Sergei Shtylyov
2007-12-09 17:10 ` Bartlomiej Zolnierkiewicz [this message]
2007-12-10 12:33 ` Sergei Shtylyov
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