linux-kernel - RE: [PATCH 3/4] [MMC] mmc_spi: add polling support for the carddetectline

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Date:	Thu, 22 May 2008 21:44:57 +0800
From:	"Chen Gong" <G.Chen@...escale.com>
To:	<avorontsov@...mvista.com>
Cc:	"Kumar Gala" <galak@...nel.crashing.org>,
	"David Brownell" <dbrownell@...rs.sourceforge.net>,
	"Pierre Ossman" <drzeus-mmc@...eus.cx>, <linuxppc-dev@...abs.org>,
	<spi-devel-general@...ts.sourceforge.net>,
	<linux-kernel@...r.kernel.org>, "Tabi Timur" <timur@...escale.com>
Subject: RE: [PATCH 3/4] [MMC] mmc_spi: add polling support for the carddetectline

 

> -----Original Message-----
> From: Anton Vorontsov [mailto:avorontsov@...mvista.com] 
> Sent: 2008?5?22? 20:39
> To: Chen Gong
> Cc: Kumar Gala; David Brownell; Pierre Ossman; 
> linuxppc-dev@...abs.org; 
> spi-devel-general@...ts.sourceforge.net; 
> linux-kernel@...r.kernel.org; Tabi Timur
> Subject: Re: [PATCH 3/4] [MMC] mmc_spi: add polling support 
> for the carddetectline
> 
> On Mon, May 19, 2008 at 11:02:13AM +0800, Chen Gong wrote:
> > 
> > > -----Original Message-----
> > > From: linuxppc-dev-bounces+b11801=freescale.com@...abs.org
> > > [mailto:linuxppc-dev-bounces+b11801=freescale.com@...abs.org]
> > > On Behalf Of Anton Vorontsov
> > > Sent: 2008?5?17? 0:51
> > > To: Kumar Gala; David Brownell; Pierre Ossman
> > > Cc: linuxppc-dev@...abs.org;
> > > spi-devel-general@...ts.sourceforge.net;
> > > linux-kernel@...r.kernel.org; Tabi Timur
> > > Subject: [PATCH 3/4] [MMC] mmc_spi: add polling support 
> for the card 
> > > detectline
> > > 
> > > Some boards do not use interrupts on the CD line, so we 
> want to poll 
> > > the CD and see if there was a change. 1 second poll 
> interval seems 
> > > resonable.
> > > 
> > > Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
> > > ---
> > >  drivers/mmc/host/mmc_spi.c  |   51 
> > 
> > I want to know whether every card working well ? Because 
> I'm working 
> > For 83xx MMC-over-SPI support, the presented concrete 
> methods I used 
> > as you do, but only 256M card seems good, 512M or 1G/2G 
> card all have 
> > some problems
> 
> So far I don't have cards larger than 256M. Will try to get 
> one though.
> 
Thanks, if you have any new test report pls contact me.

BTW, a fews days ago Joakim Tjernlund made a heavy fix for 
spi_mpc83xx.c to resolve clock glitch. But it looks no any impact
for me, but maybe it has positive effect for you.
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