[U-Boot] dwc_ahsata vs ahci

Hi,

While working on the DM project, I found out that there are two implementations of AHCI drivers - one in block/ahci.c, one in block/dwc_ahsata.c

what is the difference between them (apart from the obvious, ahci.c exposes SCSI API, dwc_ahsata exposes SATA API)? are there any problems that would prevent me from merging them?

thanks Pavel Herrmann