TMR_CTL
sc->sc_ctl = a9ptmr_read(sc, TMR_CTL);
a9ptmr_write(sc, TMR_CTL, 0);
a9ptmr_write(sc, TMR_CTL, sc->sc_ctl);
sc->sc_wdog_ctl = a9wdt_wdog_read(sc, TMR_CTL);
a9wdt_wdog_write(sc, TMR_CTL, sc->sc_wdog_ctl);
a9wdt_wdog_write(sc, TMR_CTL, sc->sc_wdog_ctl);
sc->sc_wdog_ctl = a9wdt_wdog_read(sc, TMR_CTL);