Re: sdhci-esdhc-imx and SDIO interrupts

Per-Henrik Lundblom
2011-08-31T16:34:01Z

* Robert Schwebel <r.schwebel@pengutronix.de> [110831 17:50]:

> > I'm working with a driver for an SDIO Wireless LAN card and just tried
> > it out on an i.MX35 based development board (Phytec PCM-043). My
> > impression is that the sdhci-esdhc-imx driver doesn't support SDIO
> > interrupts, is that correct?
>
> I think we didn't test this on the PCM043 so far, so it probably won't
> work without further activities.

Just having a quick look at the code and a few printouts from sdhci.c
indicates that SDIO IRQs are enabled but in the end the eSDHC controller
doesn't report any IRQs. On the other hand, the IRQ handling for SDIO
IRQs in sdhci.c doesn't follow the steps described in the i.MX35
Reference Manual (but that doesn't explain why there is not one single
SDIO IRQ reported).

/PH