From: Marc Dietrich <marvin24@gmx.de>
To: Shashidhar Hiremath <shashidharh@vayavyalabs.com>
Cc: linux-mmc@vger.kernel.org
Subject: Re: emmc power select failure
Date: Mon, 16 Apr 2012 18:44:17 +0200 [thread overview]
Message-ID: <4147205.OrxOj4sBaM@ax5200p> (raw)
In-Reply-To: <CANYdXnpBgpgOFv_rSg+tGTE_vppbV6XO66h5eyr9X2LUFk4T_A@mail.gmail.com>
On Monday 16 April 2012 15:25:55 Shashidhar Hiremath wrote:
> Hi,
> is the 8bit bus width supported by the hardware ?
yes. I works with just fine with a chromeos 3.0 kernel and 3.1 kernel (from nv-
tegra.nvidia.com).
Marc
>
> On Fri, Apr 13, 2012 at 11:29 PM, Marc Dietrich <marvin24@gmx.de> wrote:
> > Hi,
> >
> > I'm running linux-next on a tegra-sdhci host which has a Toshiba
> > THGBM2G6D2FBAI9 eMMC connected. During boot I get a "mmc1: power class
> > selection to bus width 8 failed" warning.
> >
> > /sys/kernel/debug/mmc1# cat ios
> > clock: 48000000 Hz
> > actual clock: 48000000 Hz
> > vdd: 20 (3.2 ~ 3.3 V)
> > bus mode: 2 (push-pull)
> > chip select: 0 (don't care)
> > power mode: 2 (on)
> > bus width: 3 (8 bits)
> > timing spec: 1 (mmc high-speed)
> >
> > Any hints?
next prev parent reply other threads:[~2012-04-16 16:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-13 17:59 emmc power select failure Marc Dietrich
2012-04-16 9:55 ` Shashidhar Hiremath
2012-04-16 16:44 ` Marc Dietrich [this message]
2012-05-19 15:38 ` Marc Dietrich
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