• maxims@google.com's avatar
    aspeed: Add basic ast2500-specific drivers and configuration · 14e4b149
    maxims@google.com authored
    Clock Driver
    This driver is ast2500-specific and is not compatible with earlier
    versions of this chip. The differences are not that big, but they are
    in somewhat random places, so making it compatible with ast2400 is not
    worth the effort at the moment.
    SDRAM MC driver
    The driver is very ast2500-specific and is completely incompatible
    with previous versions of the chip.
    The memory controller is very poorly documented by Aspeed in the
    datasheet, with any mention of the whole range of registers missing. The
    initialization procedure has been basically taken from Aspeed SDK, where
    it is implemented in assembly. Here it is rewritten in C, with very limited
    understanding of what exactly it is doing.
    Reviewed-by: default avatarSimon Glass <sjg@chromium.org>
Makefile 597 Bytes