• Jarkko Nikula's avatar
    serial: omap-serial: Enable the UART wake-up bits always · 78841462
    Jarkko Nikula authored
    OMAP can do also dynamic idling so wake-up enable register should be set
    also while system is running. If UART_OMAP_WER is not set, then for instance
    the RX activity cannot wake up the UART port that is sleeping.
    
    This RX wake-up feature was working when the 8250 driver was used instead
    of omap-serial. Reason for this is that the 8250 doesn't set the
    UART_OMAP_WER and then arch/arm/mach-omap2/pm34xx.c ends up saving and
    restoring the reset default which is the same than value
    OMAP_UART_WER_MOD_WKUP here.
    
    Fix this by moving the conditional UART_OMAP_WER write from serial_omap_pm
    into serial_omap_startup where wake-up bits are set unconditionally.
    Signed-off-by: default avatarJarkko Nikula <jhnikula@gmail.com>
    Cc: Govindraj.R <govindraj.raja@ti.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    78841462
omap-serial.c 35.7 KB