From: Jeff Garzik <jeff@garzik.org>
To: Mikael Pettersson <mikpe@it.uu.se>
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.19 1/3] sata_promise: PHYMODE4 fixup
Date: Sun, 03 Dec 2006 08:05:28 -0500 [thread overview]
Message-ID: <4572CB98.6050700@garzik.org> (raw)
In-Reply-To: <200612010955.kB19twqh002446@alkaid.it.uu.se>
Mikael Pettersson wrote:
> This patch adds code to fix up the PHYMODE4 "align timing"
> register value on second-generation Promise SATA chips.
> Failure to correct this value on non-x86 machines makes
> drive detection prone to failure due to timeouts. (I've
> observed about 50% detection failure rates on SPARC64.)
>
> The HW boots with a bad value in this register, but on x86
> machines the Promise BIOS corrects it to the value recommended
> by the manual, so most people have been unaffected by this issue.
>
> After developing the patch I checked Promise's SATAII driver,
> and discovered that it also corrects PHYMODE4 just like this
> patch does.
>
> This patch depends on the sata_promise SATAII updates
> patch I sent recently.
>
> Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
applied
prev parent reply other threads:[~2006-12-03 13:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-01 9:55 [PATCH 2.6.19 1/3] sata_promise: PHYMODE4 fixup Mikael Pettersson
2006-12-03 13:05 ` Jeff Garzik [this message]
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