• Paul Walmsley's avatar
    ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driver · 2bb2a5d3
    Paul Walmsley authored
    The OMAP watchdog timer driver needs to determine what caused the SoC
    to reset for its GETBOOTSTATUS ioctl.  So, define a set of standard
    reset sources across OMAP SoCs.  For OMAP2xxx, 3xxx, and 4xxx SoCs,
    define mappings from the SoC-specific reset source register bits to
    the standardized reset source IDs.  Create SoC-specific PRM functions
    that read the appropriate per-SoC register and use the mapping to
    return the standardized reset bits.  Register the SoC-specific PRM
    functions with the common PRM code via prm_register().  Create a
    function in the common PRM code, prm_read_reset_sources(), that
    calls the SoC-specific function, registered during boot.
    
    This patch does not yet handle some SoCs, such as AM33xx.  Those SoCs
    were not handled by the code this will replace.
    Signed-off-by: default avatarPaul Walmsley <paul@pwsan.com>
    2bb2a5d3
prm44xx.c 18.2 KB