From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Tony Lindgren <tony@atomide.com>
Cc: linux-kernel@vger.kernel.org,
Pierre Ossman <drzeus-list@drzeus.cx>,
Carlos Aguiar <carlos.aguiar@indt.org.br>
Subject: Re: MMC: 2/2 Fix MMC_POWER_UP on some OMAP boards
Date: Thu, 4 May 2006 08:54:33 +0100 [thread overview]
Message-ID: <20060504075433.GA2839@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20060504072630.GF8664@atomide.com>
On Thu, May 04, 2006 at 12:26:30AM -0700, Tony Lindgren wrote:
> MMC spec says that we must not enable clock prior to the power
> stabilizing. But at least omap16xx needs clock divisor configured
> during MMC_POWER_UP.
In which case it's probably better to treat MMC_POWER_UP the same as
MMC_POWER_OFF and just use MMC_POWER_ON and wait for your host to
complete it's power stabilisation. No need for this additional
complexity.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
next prev parent reply other threads:[~2006-05-04 7:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-04 7:24 MMC: 1/2 Make OMAP MMC work Tony Lindgren
2006-05-04 7:26 ` MMC: 2/2 Fix MMC_POWER_UP on some OMAP boards Tony Lindgren
2006-05-04 7:54 ` Russell King [this message]
2006-05-04 9:31 ` Tony Lindgren
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