linux-kernel - Re: [PATCH] MMC: au1xmmc R6 response support

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Message-ID: <20070124062450.GA6519@roarinelk.homelinux.net>
Date:	Wed, 24 Jan 2007 07:24:50 +0100
From:	Manuel Lauss <mano@...rinelk.homelinux.net>
To:	Pierre Ossman <drzeus-mmc@...eus.cx>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MMC: au1xmmc R6 response support

On Wed, Jan 24, 2007 at 06:52:02AM +0100, Manuel Lauss wrote:
> On Tue, Jan 23, 2007 at 07:56:51PM +0100, Pierre Ossman wrote:
> > > here's a trivial patch which adds R6 reponse support to the au1xmmc
> > > driver. Fixes SD card detection / operation.
> > > 
> > NAK. MMC_RSP_R1 and MMC_RSP_R6 have the same value so this will break
> > the switch.
> 
> not in my version of 2.6.20-rc5 (and 2.6.19):
> 
> #define MMC_RSP_R1	(MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
> #define MMC_RSP_R6	(MMC_RSP_PRESENT|MMC_RSP_CRC)
> 
> Without the patch, SD card detection stops with CMD7 returning error.

Correction: it fails at SD_SEND_RELATIVE_ADDR (it's the only command
which request R6 response)

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