>Hello, >is the mmc tool from mmc-utils supposed to work with SD cards? Not really no, but status get is pretty much the one thing that should work, apart from register reads that don't issue anything. I'm using RK3399 on SD too and it works okay for me, will try updating tomorrow. Could you show the debug prints to see the mmc command / responses? Ideally for anything in mmc/core >I tried mmc status get /dev/mmcblkN with three different SD cards on two different machines (Pinebook Pro and a Sony laptop) and I get the same error on both: ># mmc status get /dev/mmcblk0 >ioctl: Connection timed out >Could not read response to SEND_STATUS from /dev/mmcblk0 > >dmesg on the Sony machine shows: >[ 1291.196547] mmc0: new SD card at address aaaa [ 1291.196834] mmcblk0: mmc0:aaaa SD01G 969 MiB [ 1291.200263] mmcblk0: p1 p2 p3 [ 1306.273160] rtsx_pci_sdmmc rtsx_pci_sdmmc.0: __mmc_blk_ioctl_cmd: cmd error -110 [ 1306.276978] mmcblk0: p1 p2 p3 > >I'm able to get status of the internal eMMC device on Pinebook Pro with no errors. extcsd read works fine, too. > >I'm running Fedora 38 with kernel 6.2.9 on both machines if that helps. > >Regards, >Dominik >-- >Fedora https://getfedora.org | RPM Fusion http://rpmfusion.org >There should be a science of discontent. People need hard times and oppression to develop psychic muscles. > -- from "Collected Sayings of Muad'Dib" by the Princess Irulan > > Hyperstone GmbH | Reichenaustr. 39a | 78467 Konstanz Managing Director: Dr. Jan Peter Berns. Commercial register of local courts: Freiburg HRB381782
