Re: [PATCH 1/3] at91_mci: Enable MMC_CAP_SDIO_IRQ only when itactually works

From: Pierre Ossman
Date: Thu Jul 17 2008 - 06:56:13 EST

On Thu, 17 Jul 2008 11:34:07 +0200
Nicolas Ferre <nicolas.ferre@xxxxxxxxx> 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@xxxxxxxxx>
> ---

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?).

-- Pierre Ossman

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