ti_prcm_write_4
DEVMETHOD(clkdev_write_4, ti_prcm_write_4),
ti_prcm_write_4(ti_prcm_sc->dev, AM335x_PRM_RSTCTRL, (1<<1));
int ti_prcm_write_4(device_t dev, bus_addr_t addr, uint32_t val);
ti_prcm_write_4(parent, addr, val);