On Sun, Jun 12, 2011 at 12:59:39AM +0800, Silva Andre-B22958 wrote:

Hi Shawn,

The tests was done simpling inserting and removing the SD card, 

That said you saw CD working, and what about WP?

since before no parameters were passed to the  imx53_add_sdhci_esdhc_imx and the controller was able to detect the card via software. When setting up the iomux (CD) pin and passing it to the  imx53_add_sdhci_esdhc_imx function, it should be able to start detecting the card using the pin instead.

No, your CD gpio setup does not make any change.  The CD is working
in the exactly same way before you patch.  If you check function
esdhc_pltfm_init of sdhci-esdhc-imx driver, you will find the
following.

                /* i.MX5x has issues to be researched */
                if (!cpu_is_mx25() && !cpu_is_mx35())
                        goto not_supported;

CD gpio interrupt only gets supported on mx25 and mx35 currently,
and mx5 CD works with flag SDHCI_QUIRK_BROKEN_CARD_DETECTION set,
in which case a very expensive method is being used to poll card
present by sdhci driver.

-- 
Regards,
Shawn