Could anyone share their experience on the speed of SD access speed on the existing SD card ports on i.MX6 Sabresd? It seems I could only achieve 19MB/s. The output is
/dev/mmcblk1: (Local UHSI ultra high speed SD card)
Timing buffered disk reads: 58 MB in 3.00 seconds = 19.31 MB/sec
Is there any method I could tune the speed to a more reasonable one? I put a Ultra High Speed SD card (Transcend) with a 85MB/s listed on the package; however, I could only get 19.31 MB/s. If I use a stand SD card,it achieves 14MB/s. Is this normal?