RK_PWM_CTRL_ENABLE_MASK
if ((reg & RK_PWM_CTRL_ENABLE_MASK) == RK_PWM_CTRL_ENABLED)
SET(reg, RK_PWM_CTRL_ENABLE_MASK, RK_PWM_CTRL_DISABLED);
SET(reg, RK_PWM_CTRL_ENABLE_MASK, RK_PWM_CTRL_ENABLED);
SET(reg, RK_PWM_CTRL_ENABLE_MASK, enable);