On Thu, Nov 1, 2018 at 12:53 PM A.s. Dong <aisheng.dong@xxxxxxx> wrote: > Can you tell which version were you looking at? > From my version SPF-29163_A1, it's populated by default. Mine is sch-29163-b and it shows both micro SD card and eMMC on the schematics. On my board I see only the micro SD card populated, not the eMMC. Also, if you are describing the eMMC then why do you pass the card detect property and only 4 data lines? SD0_nRST is only connected to the eMMC card. eMMC does not have card detect signal and it uses 8 data lines, so clearly there is something inconsistent in your dts. What exactly do you want to describe: the SD card or the eMMC?