Advanced users • Re: Testing class A2 SD cards with Command Queueing on Pi 5

0.993707] mmc0: SDHCI controller on 1000fff000.mmc [1000fff000.mmc] using ADMA 64-bit
[ 1.092355] mmc0: Command Queue Engine enabled
[ 1.092360] mmc0: new ultra high speed SDR104 SDXC card at address e624
[ 1.092544] mmcblk0: mmc0:e624 SN64G 59.5 GiB
[ 1.140687] mmcblk0: p1 p2
[ 1.140796] mmcblk0: mmc0:e624 SN64G 59.5 GiB (quirks 0x00004000)
[ 1.144577] mmc1: SDHCI controller on 1001100000.mmc [1001100000.mmc] using ADMA 64-bit

uname -a

sudo dd if=/dev/zero of=/testfile bs=16M count=64 oflag=direct status=progress && sync ; sudo rm -f /testfile

find /sys/bus/mmc/devices/mmc0\:*/ -type f -not -path "*block*" -not -path "*power*" -print -exec cat {} \;

/sys/bus/mmc/devices/mmc0:e624/fwrev
0x0
/sys/bus/mmc/devices/mmc0:e624/uevent
DRIVER=mmcblk
MMC_TYPE=SD
MMC_NAME=SN64G
MODALIAS=mmc:block
/sys/bus/mmc/devices/mmc0:e624/cid
035344534e363447801ac3a963012a00
/sys/bus/mmc/devices/mmc0:e624/rca
0xe624
/sys/bus/mmc/devices/mmc0:e624/csd
400e0032db790001dbd37f800a404000
/sys/bus/mmc/devices/mmc0:e624/manfid
0x000003
/sys/bus/mmc/devices/mmc0:e624/ocr
0x00300000
/sys/bus/mmc/devices/mmc0:e624/preferred_erase_size
4194304
/sys/bus/mmc/devices/mmc0:e624/type
SD
/sys/bus/mmc/devices/mmc0:e624/hwrev
0x8
/sys/bus/mmc/devices/mmc0:e624/date
10/2018
/sys/bus/mmc/devices/mmc0:e624/dsr
0x404
/sys/bus/mmc/devices/mmc0:e624/erase_size
512
/sys/bus/mmc/devices/mmc0:e624/removable
removable
/sys/bus/mmc/devices/mmc0:e624/oemid
0x5344
/sys/bus/mmc/devices/mmc0:e624/serial
0x1ac3a963
/sys/bus/mmc/devices/mmc0:e624/ssr
0000000008000000040090000f05391e000800000002fc0003000000000000000000000000000000000000000000000000000000000000000000000000000000
/sys/bus/mmc/devices/mmc0:e624/scr
0245848700000000
/sys/bus/mmc/devices/mmc0:e624/name
SN64G

sudo hdparm -tT /dev/mmcblk0p2

Timing cached reads: 5854 MB in 2.00 seconds = 2928.29 MB/sec
Timing buffered disk reads: 248 MB in 3.00 seconds = 82.66 MB/sec

Statistics: Posted by RPIgoodSBC — Tue Mar 26, 2024 9:34 pm