Re: [PATCH 1/3] at91_mci: Enable MMC_CAP_SDIO_IRQ only when it actuallyworks
From: Nicolas Ferre
Date: Fri Jul 18 2008 - 09:30:55 EST
Pierre Ossman :
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
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?).
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.
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