Hi I reach out with a problem we identify with SanDisk 8G eMMC 85% of our production works well with hs400es and hs400 configuration, the other 15% have problems detecting the chip. For the failure analysis for the unstable boards have the strobe clock of more then 200Mhz. We measured 204.7Mhz, looks like a chip related problem. Anything we can improve on the rockchip / mmc stack? -Chris