Power of Attorney

    Know all by these presents, that the undersigned hereby makes, constitutes
and appoints each of Blair Walters and Gina Christopher, or either of them
acting singly, and with full power of substitution and re-substitution, the
undersigned's true and lawful attorney-in-fact (each of such persons and their
substitutes being referred to herein as the "Attorney-in-Fact"), with full power
to act for the undersigned and in the undersigned's name, place and stead, in
any and all capacities, to:

    1.  Prepare, execute, and submit to the Securities and Exchange Commission
        ("SEC") a Form ID, including amendments thereto, and any other documents
        necessary or appropriate to obtain codes and passwords enabling the
        undersigned to make electronic filings with the SEC of reports required
        or considered by the Attorney-in-Fact to be advisable under Section 13
        or Section 16 of the Securities Exchange Act of 1934 (the "Exchange
        Act") or any rule or regulation of the SEC;

    2.  Prepare, execute and submit to the SEC, Marvell Technology, Inc. (the
        "Company"), and/or any national securities exchange on which the
        Company's securities are listed any and all reports (including any
        amendments thereto) the undersigned is required to file with the SEC, or
        which the Attorney-in-Fact considers it advisable to file with the SEC,
        under Section 13 or Section 16 of the Exchange Act or any rule or
        regulation thereunder, or under Rule 144 under the Securities Act of
        1933 ("Rule 144"), with respect to the any security of the Company,
        including Forms 3, 4 and 5, Schedules 13D and 13G, and Forms 144; and

    3.  Obtain, as the undersigned's representative and on the undersigned's
        behalf, information regarding transactions in the Company's equity
        securities from any third party, including the Company and any brokers,
        dealers, employee benefit plan administrators and trustees, and the
        undersigned hereby authorizes any such third party to release any such
        information to the Attorney-in-Fact.

    The undersigned acknowledges that:

          a)  This Power of Attorney authorizes, but does not require, the
              Attorney-in-Fact to act in his or her discretion on information
              provided to such Attorney-in-Fact without independent verification
              of such information;

          b)  Any documents prepared or executed by the Attorney-in-Fact on
              behalf of the undersigned pursuant to this Power of Attorney will
              be in such form and will contain such information as the Attorney-
              in-Fact, in his or her discretion, deems necessary or desirable;

          c)  Neither the Company nor the Attorney-in-Fact assumes any liability
              for the undersigned's responsibility to comply with the
              requirements of Section 13 or Section 16 of the Exchange Act or
              Rule 144, any liability of the undersigned for any failure to
              comply with such requirements, or any liability of the undersigned
              for disgorgement of profits under Section 16(b) of the Exchange
              Act; and

          d)  This Power of Attorney does not relieve the undersigned from
              responsibility for compliance with the undersigned's obligations
              under Section 13 or Section 16 of the Exchange Act, including,
              without limitation, the reporting requirements under Section 13 or
              Section 16 of the Exchange Act.

    The undersigned hereby grants to the Attorney-in-Fact full power and
authority to do and perform each and every act and thing requisite, necessary or
advisable to be done in connection with the foregoing, as fully, to all intents
and purposes, as the undersigned might or could do in person, hereby ratifying
and confirming all that the Attorney-in-Fact, or his or her substitute or
substitutes, shall lawfully do or cause to be done by authority of this Power of
Attorney.

    This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 4 or 5 or Schedules 13D or 13G
or Forms 144 with respect to the undersigned's holdings of and transactions in
securities of the Company, unless earlier revoked by the undersigned in a signed
writing delivered to the Attorney-in-Fact. This Power of Attorney revokes all
previous powers of attorney with respect to the subject matter of this Power of
Attorney.

    IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of April 16, 2021.


                          /s/ Mitchell Gaynor
                         ---------------------------------
                          Name: Mitchell Gaynor