Hi Martin, > > Are you able to hook up an oscilloscope to check whether SDIO DAT1 pin stays low or not? > Indeed, > > DAT1 goes low after the command is sent and stays low until the card is > reset. > > No SDIO interrupts are received by the host controller (i.MX53) > > So it looks like a host controller issue - right? That's right. The host controller and/or its driver need to be checked. Thanks, Bing > > Regards, > > Martin -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html