+- PINE64 (https://forum.pine64.org)
+-- Forum: ROCKPRO64 (https://forum.pine64.org/forumdisplay.php?fid=98)
+--- Forum: General Discussion on ROCKPRO64 (https://forum.pine64.org/forumdisplay.php?fid=99)
+--- Thread: SD Card UHS speed (/showthread.php?tid=5936)
SD Card UHS speed - hopkinskong - 04-04-2018
Does RockPro64 support UHS speed?
It seems that not many SBC have support the high speed SD bus due to the lower voltage requirement requires extra hardware to detect the type of card to switch to lower voltage and directly using lower voltage will breaking backward compatibility.
However, for a competent hardware like RockPro64 (2Ghz CPU, PCI-E, etc.), not having a fast SD card bus seems a bit of shame.
RE: SD Card UHS speed - Luke - 04-04-2018
(04-04-2018, 12:34 PM)hopkinskong Wrote: Does RockPro64 support UHS speed?
It seems that not many SBC have support the high speed SD bus due to the lower voltage requirement requires extra hardware to detect the type of card to switch to lower voltage and directly using lower voltage will breaking backward compatibility.
However, for a competent hardware like RockPro64 (2Ghz CPU, PCI-E, etc.), not having a fast SD card bus seems a bit of shame.
I honestly cannot see a reason for SDs anymore with a board like the RPro64. You can use eMMC, USB 3.0 / C drives (remember SPI boot is an option) and even other types of drives via PCIe ...
Sorry for not answering your question (I don't know the answer) but I feel a SD would only be useful for testing an image on a board like this.
RE: SD Card UHS speed - xalius - 04-04-2018
Excluding any hardware issues, UHS-I modes should work since the regulator used to supply the port for the mmc bus and the card can switch between 1.8V and 3.3V... as far as I have seen reports from other RK3399 boards the software support is also in place in the BSP kernel at least...
RE: SD Card UHS speed - z4v4l - 12-03-2018
Could anybody owning the board and a UHS-I capable SD card, show iozone test results for them? Please.
I want to get the board, I like it from all the rk3399 boards most, but I only can buy if it does support UHS-I.
RE: SD Card UHS speed - dukla2000 - 12-06-2018
(12-03-2018, 02:17 PM)z4v4l Wrote: Could anybody owning the board and a UHS-I capable SD card, show iozone test results for them? Please.
Makes sense to me to use an NVMe as wipes the floor with eMMC or SDcard. Still have my SDcard in for boot so
Code:
$ uname -a
Linux rpro64.dukla.net 4.4.138-1100-rockchip-ayufan-g95cecee47f40 #1 SMP Sat Sep 29 15:43:04 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux
$ iozone -e -I -a -s 10M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
Iozone: Performance Test of File I/O
Version $Revision: 3.429 $
Compiled for 64 bit mode.
Build: linux
Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
Al Slater, Scott Rhine, Mike Wisner, Ken Goss
Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,
Vangel Bojaxhi, Ben England, Vikentsi Lapa.
Run began: Thu Dec 6 21:26:27 2018
Include fsync in write timing
O_DIRECT feature enabled
Auto Mode
File size set to 10240 kB
Record Size 4 kB
Record Size 16 kB
Record Size 512 kB
Record Size 1024 kB
Record Size 16384 kB
Command line used: iozone -e -I -a -s 10M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
Output is in kBytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 kBytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random random bkwd record stride
kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
10240 4 2085 1404 8684 8760 8742 784
10240 16 5121 6378 16028 15916 16022 11567
10240 512 15535 15499 20967 21248 21280 16811
10240 1024 18969 19248 22551 22666 22667 19433
iozone test complete.Note I cut the filesize to 10M for the SDcard - 100M numbers for NVMe are here.
Will update this post with 4.19 numbers after a reboot and will also confirm the SDcard spec.
PS - OK, my SDcard is Samsung EVO Plus 128Gb. As expected 4.19 significantly faster than 4.4,138-1100 I used above (loads of noise on these forums elsewhere why).
Code:
$ uname -a
Linux rpro64.dukla.net 4.19.0 #4 SMP PREEMPT Sun Dec 2 23:57:11 GMT 2018 aarch64 aarch64 aarch64 GNU/Linux
$ iozone -e -I -a -s 10M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
Iozone: Performance Test of File I/O
Version $Revision: 3.429 $
Compiled for 64 bit mode.
Build: linux
Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins
Al Slater, Scott Rhine, Mike Wisner, Ken Goss
Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR,
Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner,
Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone,
Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root,
Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer,
Vangel Bojaxhi, Ben England, Vikentsi Lapa.
Run began: Thu Dec 6 21:44:04 2018
Include fsync in write timing
O_DIRECT feature enabled
Auto Mode
File size set to 10240 kB
Record Size 4 kB
Record Size 16 kB
Record Size 512 kB
Record Size 1024 kB
Record Size 16384 kB
Command line used: iozone -e -I -a -s 10M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
Output is in kBytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 kBytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random random bkwd record stride
kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
10240 4 2661 2977 13919 14392 10982 4107
10240 16 6004 7628 34826 34952 35106 17878
10240 512 33570 32039 61211 62413 61537 31775
10240 1024 30877 20863 64869 66056 65049 20667
iozone test complete.And
Code:
$ dmesg | grep mmc
...
[ 2.061270] mmc_host mmc0: Bus speed (slot 0) = 148500000Hz (slot req 150000000Hz, actual 148500000HZ div = 0)
[ 2.328584] dwmmc_rockchip fe320000.dwmmc: Successfully tuned phase to 226
[ 2.329224] mmc0: new ultra high speed SDR104 SDXC card at address 0001
[ 2.330533] mmcblk0: mmc0:0001 ED4QT 119 GiB
[ 2.336271] mmcblk0: p1 p2 p3 p4 p5 p6 p7RE: SD Card UHS speed - z4v4l - 12-06-2018
Thank you very much! Nice to see these numbers, it's good that your SD card is this cool, apparently not only UHS-I works, but SDR104 does! Well, with ~148MHz, but that is another question and it ultimately goes to Rockchip. Thanks again.
