Hi Simon, On Fri, Jan 18, 2019 at 1:25 PM Simon Horman <[email protected]> wrote: > Enable HS400 of SDHI3 using the corresponding DT property. > No further changes are required. > > Signed-off-by: Simon Horman <[email protected]>
Tested-by: Geert Uytterhoeven <[email protected]> Using "hdparm -tT /dev/mmcblk0" HS200: Timing cached reads: 694 MB in 2.00 seconds = 346.60 MB/sec Timing buffered disk reads: 434 MB in 3.00 seconds = 144.56 MB/sec HS400: Timing cached reads: 696 MB in 2.00 seconds = 348.20 MB/sec Timing buffered disk reads: 446 MB in 3.00 seconds = 148.65 MB/sec No real difference. Note that "dd" gives me very fluctuating results (all for HS400): root@ebisu:~# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=128 iflag=direct 128+0 records in 128+0 records out 134217728 bytes (134 MB, 128 MiB) copied, 3.20103 s, 41.9 MB/s root@ebisu:~# dd if=/dev/mmcblk0 of=/dev/null bs=1M count=128 iflag=direct 128+0 records in 128+0 records out 134217728 bytes (134 MB, 128 MiB) copied, 1.15324 s, 116 MB/s 128+0 records in 128+0 records out 134217728 bytes (134 MB, 128 MiB) copied, 1.82701 s, 73.5 MB/s Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected] In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
