(

a) Any person years of age or older who is convicted for a second or subsequent time of violating

Section 11353, as that

section applies to paragraph (1) of subdivision (

f) of

Section 11054, where the previous conviction resulted in a prison sentence, shall, as a full and separately served enhancement to the punishment imposed for that second or subsequent conviction of

Section 11353, be punished by imprisonment in the state prison for one, two, or three years. (

b) If the second or subsequent violation of

Section 11353, as described in subdivision (a), involved a minor who is years of age or younger, the defendant shall, as a full and separately served enhancement to any other enhancement provided in this section, be punished by imprisonment in the state prison for one, two, or three years, at the discretion of the court. (

c) The additional punishment provided in this

section shall not be imposed unless the allegation is charged in the accusatory pleading and admitted by the defendant or found to be true by the trier of fact. (

d) The additional punishment provided in this

section shall be in addition to any other punishment provided by law and shall not be limited by any other provision of law. (

e) Notwithstanding any other provision of law, the court may strike the additional punishment provided for in this

section if it determines that there are circumstances in mitigation of the additional punishment and states on the record its reasons for striking the additional punishment.