From: Nicolas Ferre <nicolas.ferre@atmel.com>
To: Pierre Ossman <drzeus@drzeus.cx>
Cc: ARM Linux Mailing List <linux-arm-kernel@lists.arm.linux.org.uk>,
Andrew Victor <linux@maxim.org.za>,
Ville Syrjala <syrjala@sci.fi>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] at91_mci: Enable MMC_CAP_SDIO_IRQ only when it actually works
Date: Fri, 18 Jul 2008 15:30:40 +0200 [thread overview]
Message-ID: <48809B00.1070405@atmel.com> (raw)
In-Reply-To: <20080717125544.36f41947@mjolnir.drzeus.cx>
Pierre Ossman :
> On Thu, 17 Jul 2008 11:34:07 +0200
> Nicolas Ferre <nicolas.ferre@atmel.com> wrote:
>
>> According to the datasheets AT91SAM9261 does not support
>> SDIO interrupts, and AT91SAM9260/9263 have an erratum
>> requiring 4bit mode while using slot B for the interrupt
>> to work.
>>
>> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
>> ---
>
> Not all SDIO cards use 4-bit mode, so it looks to me like you have to
> disable it completely (unless there's a third revision where it works
> without any fine print?).
Well, I understand.
In your opinion, a printed warning that says to be sure to use only
4-bit mode SDIO cards on slot B... is not acceptable ?
It kind of disappoints me to remove this feature as the
at91sam9260ek/9xe/9g20 board uses only slot B, and I really like to
connect SDIO with IRQ on it.
Regards,
--
Nicolas Ferre
next prev parent reply other threads:[~2008-07-18 13:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 9:34 [PATCH 1/3] at91_mci: Enable MMC_CAP_SDIO_IRQ only when it actually works Nicolas Ferre
2008-07-17 10:55 ` Pierre Ossman
2008-07-18 13:30 ` Nicolas Ferre [this message]
2008-07-18 23:01 ` Pierre Ossman
2008-07-20 9:55 ` ian
2008-07-20 11:13 ` Pierre Ossman
2008-07-20 23:28 ` ian
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