On Sun, Jun 01, 2014 at 11:22:19PM +0800, Shawn Guo wrote: > On Fri, May 23, 2014 at 02:33:04PM +0200, Sascha Hauer wrote: > > - Move cd/wp pinctrl from the hog group to the esdhc groups > > - use gpio for card detection / write protection on esdhc2 since > > the controller based detection does not work > > I tracked it a little bit and found that the controller based detection > works fine with v3.13 and starts being broken from v3.14-rc1. The > offending commit seems to be 89d7e5c13122 (mmc: sdhci-esdhc-imx: add > runtime pm support). This makes sense. When the controller is disabled it obviously can't detect card insertion/removal events anymore. So you can only have one: controller based card detection or runtime pm for the controller. So it probably makes sense to use gpio card detection whenever possible to get additional power savings. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
