RK_PWM_WRITE
RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);
RK_PWM_WRITE(sc, RK_PWM_PERIOD, period_out);
RK_PWM_WRITE(sc, RK_PWM_DUTY, duty_out);
RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);
RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);