I tried to setting HSPE bit in SD_HCTL[2] when configure MMC controller to working at frequency as 48Mhz, however, it report Command CRC error in pending interrupt after setting this bit.
I found OMAP4460 has such errata described in http://www.ti.com/lit/er/swpz017l/swpz017l.pdf
I want to know if AM437x has such errata? Thanks in advance!