08 May, 2017

1 commit

  • This change switches all existing users of ast2500 Watchdog to Driver
    Model based Watchdog driver.

    To perform system reset Sysreset Driver uses first Watchdog device found
    via uclass_first_device call. Since the system is going to be reset
    anyway it does not make much difference which watchdog is used.

    Instead of using Watchdog to reset itself, SDRAM driver now uses Reset
    driver to do that.

    These were the only users of the old Watchdog API, so that API is
    removed.

    This all is done in one change to avoid having to maintain dual API for
    watchdog in between.

    Signed-off-by: Maxim Sloyko
    Reviewed-by: Simon Glass

    maxims@google.com
     

29 Jan, 2017

1 commit

  • Add support for Watchdog Timer, which is compatible with AST2400 and
    AST2500 watchdogs. There is no uclass for Watchdog yet, so the driver
    does not follow the driver model. It also uses fixed clock, so no clock
    driver is needed.

    Add support for timer for Aspeed ast2400/ast2500 devices.
    The driver actually controls several devices, but because all devices
    share the same Control Register, it is somewhat difficult to completely
    decouple them. Since only one timer is needed at the moment, this should
    be OK. The timer uses fixed clock, so does not rely on a clock driver.

    Add sysreset driver, which uses watchdog timer to do resets and particular
    watchdog device to use is hardcoded (0)
    Reviewed-by: Simon Glass

    maxims@google.com