rk8xx_write
error = rk8xx_write(sc->dev, sc->dev_ctrl.dev_ctrl_reg,
int rk8xx_write(device_t dev, uint8_t reg, uint8_t *data, uint8_t size);
rk8xx_write(sc->base_dev, CLK32OUT_REG, &val, 1);
rk8xx_write(sc->base_dev, sc->def->enable_reg, &val, 1);
rk8xx_write(sc->base_dev, sc->def->voltage_reg, &val, 1);
error = rk8xx_write(dev, sc->rtc_regs.ctrl, &ctrl, 1);
error = rk8xx_write(dev, sc->rtc_regs.secs, data, 7);
rk8xx_write(dev, sc->rtc_regs.ctrl, &ctrl, 1);
error = rk8xx_write(dev, sc->rtc_regs.ctrl, &ctrl, 1);
error = rk8xx_write(dev, sc->rtc_regs.ctrl, &ctrl, 1);
error = rk8xx_write(dev, sc->rtc_regs.ctrl, &ctrl, 1);