linux-kernel - Re: [PATCH] MMC Core: Drop initialization frequency floor to 50kHz

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Message-Id: <1246537056.2980.60.camel@linux-51e8.site>
Date:	Thu, 02 Jul 2009 22:17:36 +1000
From:	Ben Nizette <bn@...sdigital.com>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Cc:	pierre@...man.eu, s.hauer@...gutronix.de,
	kernel <kernel@...32linux.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] MMC Core: Drop initialization frequency floor to 50kHz

On Thu, 2009-07-02 at 13:58 +0200, Haavard Skinnemoen wrote:
> Ben Nizette wrote:
> > Was recently merged.  This is too fast for at least one setup
> > permutation - the one on my desk which through trial and error won't
> > initialise at anything above ~350kHz (older Sandisk 256MB SD on
> > atmel-mci).
> 
> What kind of board is this? It sounds a bit like the CMD or DATA0
> pull-up is too weak...

It is a custom board (you'll see the board support soon) but those
pullups are 47k same as NGW100 and STK1000.

'scope confirms all the waveforms are crisp and correct.

> 
> Haavard

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