From: Pierre Ossman <drzeus@drzeus.cx>
To: Madhusudhan c <cr.madhusudhan@gmail.com>
Cc: linux-kernel@vger.kernel.org, philipl@overt.org
Subject: Re: MMCv4 support (8-bit support missing)
Date: Tue, 24 Apr 2007 07:03:30 +0200 [thread overview]
Message-ID: <462D8FA2.5010609@drzeus.cx> (raw)
In-Reply-To: <ff1613620704200421w1e1aeea5r5acc3a7c0c548b96@mail.gmail.com>
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Madhusudhan c wrote:
>
> Suppose a host controller is capable of suporting 8-bit and it tells
> the core that it can support 8-bit. Now the card that is plugged in
> might or might not support 8-bit based on the type of the card. There
> is no field in the ext_csd which will tell you what bus width the card
> can support.
>
I've looked through the MMC 4.2 spec and I see nothing in it that even hints
that 8-bit support might be optional. So as it stands, the bus testing is still out.
Rgds
Pierre
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next prev parent reply other threads:[~2007-04-24 5:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-17 6:59 MMCv4 support (8-bit support missing) Madhusudhan c
2007-04-17 15:15 ` Philip Langdale
2007-04-18 8:46 ` Pierre Ossman
2007-04-18 11:53 ` Madhusudhan c
2007-04-18 14:21 ` Pierre Ossman
2007-04-19 14:04 ` Madhusudhan c
2007-04-19 16:25 ` Pierre Ossman
2007-04-20 11:21 ` Madhusudhan c
2007-04-20 16:12 ` Philip Langdale
2007-04-24 5:03 ` Pierre Ossman [this message]
2007-04-26 3:34 ` Madhusudhan c
2007-04-27 6:20 ` Pierre Ossman
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