I am trying to get an SD Card to work via SPI interface. I am using a RaspberryPI Compute Module with kernel Version 4.4, but I can't get it to work properly. I've tried it with the native spi interface as well as with the spi aux interface and also with a gpio bitbang spi interface. It's always the same error: [ 2639.558282] mmc1: new SD card on SPI [ 2639.566325] mmcblk1: mmc1:0000 SD256 243 MiB [ 2639.646120] mmcblk1: p1 < > [ 2639.833759] mmcblk1: error -38 sending status command, retrying [ 2639.839973] mmcblk1: error -38 sending status command, retrying [ 2639.846170] mmcblk1: error -38 sending status command, aborting [ 2639.853406] mmc1: SPI card removed [ 2640.240223] mmc1: host does not support reading read-only switch, assuming write-enable [ 2640.248328] mmc1: new SD card on SPI [ 2640.256373] mmcblk1: mmc1:0000 SD256 243 MiB [ 2640.336068] mmcblk1: p1 < > [ 2640.523545] mmcblk1: error -38 sending status command, retrying [ 2640.529757] mmcblk1: error -38 sending status command, retrying [ 2640.535893] mmcblk1: error -38 sending status command, aborting [ 2640.543129] mmc1: SPI card removed [ 2640.930176] mmc1: host does not support reading read-only switch, assuming write-enable [ 2640.938313] mmc1: new SD card on SPI [ 2640.946679] mmcblk1: mmc1:0000 SD256 243 MiB [ 2641.026395] mmcblk1: p1 < > [ 2641.213996] mmcblk1: error -38 sending status command, retrying [ 2641.220208] mmcblk1: error -38 sending status command, retrying [ 2641.226344] mmcblk1: error -38 sending status command, aborting [ 2641.233435] mmc1: SPI card removed [ 2641.620177] mmc1: host does not support reading read-only switch, assuming write-enable [ 2641.628277] mmc1: new SD card on SPI [ 2641.636530] mmcblk1: mmc1:0000 SD256 243 MiB [ 2641.716114] mmcblk1: p1 < > [ 2641.903636] mmcblk1: error -38 sending status command, retrying [ 2641.909852] mmcblk1: error -38 sending status command, retrying [ 2641.915987] mmcblk1: error -38 sending status command, aborting [ 2641.923056] mmc1: SPI card removed I don't have any RO or CD pins configured, just plain SPI interface directly to the SD Card. I've tried it with different SD cards with differen capacities. It's always the same error. The above messages appear in a endless loop.The last time I've used the mmc_spi driver was kernel 3.8 I think with this version everything worked without any problems. Does anyone know how to fix this? Thanks, Franz -- 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
