Re: brcm 4329 problems

[Russell King - ARM Linux <linux@arm.linux.org.uk>]

On Tue, Feb 11, 2014 at 03:33:09PM +0800, Dong Aisheng wrote:
> It depends on both host and card that 1) if host is able to detect
> SDIO interrupts without clock
> and 2) if the card is able to send interrupt to host without clock.
> If any one of both can't do that, we may need to tell host to not
> do runtime suspend to prevent the clock from being disabled.
> Or the SDIO interrupt may not work.
> 
> The IMX esdhc/usdhc can not detect the SDIO interrupts sent from card
> if the clock is disabled.
> So we need such quirk to not allow runtime PM for SDIO cards.
> Doesn't it make sense?

That's strange.  I have it working as of last night.

Yes, I have to leave the AHB clock on so that the registers are readable,
in the interrupt handler, and that's something I only do if the SDIO
interrupt is enabled, but everything else gets disabled.

-- 
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Estimate before purchase was "up to 13.2Mbit".