diff --git a/power-sequencer/mihawk-cpld.hpp b/power-sequencer/mihawk-cpld.hpp
new file mode 100644
index 0000000..4e0858e
--- /dev/null
+++ b/power-sequencer/mihawk-cpld.hpp
@@ -0,0 +1,355 @@
+#pragma once
+
+#include "device.hpp"
+#include "pmbus.hpp"
+#include "tools/i2c/i2c_interface.hpp"
+
+#include <sdbusplus/bus.hpp>
+
+#include <algorithm>
+#include <filesystem>
+
+namespace phosphor
+{
+namespace power
+{
+
+/**
+ * @class MihawkCPLD
+ *
+ * This class implements fault analysis for Mihawk's CPLD
+ * power sequencer device.
+ *
+ */
+class MihawkCPLD : public Device
+{
+  public:
+    MihawkCPLD() = delete;
+    ~MihawkCPLD() = default;
+    MihawkCPLD(const MihawkCPLD&) = delete;
+    MihawkCPLD& operator=(const MihawkCPLD&) = delete;
+    MihawkCPLD(MihawkCPLD&&) = default;
+    MihawkCPLD& operator=(MihawkCPLD&&) = default;
+
+    /**
+     * Constructor
+     *
+     * @param[in] instance - the device instance number
+     * @param[in] bus - D-Bus bus object
+     */
+    MihawkCPLD(size_t instance, sdbusplus::bus::bus& bus);
+
+    /**
+     * Analyzes the device for errors when the device is
+     * known to be in an error state.  A log will be created.
+     */
+    void onFailure() override;
+
+    /**
+     * Checks the device for errors and only creates a log
+     * if one is found.
+     */
+    void analyze() override;
+
+    /**
+     * Clears faults in the device
+     */
+    void clearFaults() override
+    {
+    }
+
+  private:
+    /**
+     * If checkPoweronFault() or checkPowerreadyFault()
+     * returns "true", use readFromCPLDErrorCode()
+     * to read CPLD-error-code-register
+     * to analyze the fail reason.
+     *
+     * @param[in] statusReg - I2C's statusReg, slaveAddr
+     * offset.
+     * ex.Mihawk's CPLD-register is on slaveAddr ox40 of
+     * i2c-11, but poweron_errcode-register is on slaveAddr
+     * offset 0x21, power_ready-errorcode-register is on
+     * slaveAddr offset 0x22.
+     *
+     * @return int - the error-code value which is read on
+     * CPLD-error-code-register.
+     */
+    int readFromCPLDErrorCode(int statusReg);
+
+    /**
+     * Checks for PoweronFault on Mihawk's
+     * CPLD-power_on-error-interrupt-bit-register
+     * whether is transfered to "1".
+     *
+     * @return bool - true if power_on fail.
+     */
+    bool checkPoweronFault();
+
+    /**
+     * Clear CPLD intrupt record after reading CPLD_register.
+     */
+    void clearCPLDregister();
+
+    /**
+     * Check for PowerreadyFault on Mihawk's
+     * CPLD-power_ready-error-interrupt-bit-register
+     * whether is transfered to "1".
+     *
+     * @return bool - true if power_ready fail.
+     */
+    bool checkPowerreadyFault();
+
+    /**
+     * Use I2CInterface to read & write CPLD_register.
+     */
+    std::unique_ptr<i2c::I2CInterface> i2c;
+
+    /**
+     * The D-Bus bus object
+     */
+    sdbusplus::bus::bus& bus;
+
+    /**
+     * Open CPLD_register via i2c.
+     */
+    void openCPLDDevice();
+
+    /**
+     * The parameter which is checked CPLD's the same error
+     * whether is created again.
+     */
+    bool errorcodeMask;
+
+    enum class ErrorCode : int
+    {
+        /**
+         * All of powerOnErrorcode are the definition of error-code
+         * which are read on CPLD-error-code-register.
+         */
+        /**
+         * The definition of error-code:
+         * Read CPLD-error-code-register fail.
+         */
+        _0 = 0,
+
+        /**
+         * The definition of error-code:
+         * PSU0_PGOOD fail.
+         */
+        _1 = 1,
+
+        /**
+         * The definition of error-code:
+         * PSU1_PGOOD fail.
+         */
+        _2 = 2,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_A fail.
+         */
+        _3 = 3,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_B fail.
+         */
+        _4 = 4,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_C fail.
+         */
+        _5 = 5,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_D fail.
+         */
+        _6 = 6,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_E fail.
+         */
+        _7 = 7,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_F fail.
+         */
+        _8 = 8,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_G fail.
+         */
+        _9 = 9,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_H fail.
+         */
+        _10 = 10,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_J fail.
+         */
+        _11 = 11,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_K fail.
+         */
+        _12 = 12,
+
+        /**
+         * The definition of error-code:
+         * 240Va_Fault_L fail.
+         */
+        _13 = 13,
+
+        /**
+         * The definition of error-code:
+         * P5V_PGOOD fail.
+         */
+        _14 = 14,
+
+        /**
+         * The definition of error-code:
+         * P3V3_PGOOD fail.
+         */
+        _15 = 15,
+
+        /**
+         * The definition of error-code:
+         * P1V8_PGOOD fail.
+         */
+        _16 = 16,
+
+        /**
+         * The definition of error-code:
+         * P1V1_PGOOD fail.
+         */
+        _17 = 17,
+
+        /**
+         * The definition of error-code:
+         * P0V9_PGOOD fail.
+         */
+        _18 = 18,
+
+        /**
+         * The definition of error-code:
+         * P2V5A_PGOOD fail.
+         */
+        _19 = 19,
+
+        /**
+         * The definition of error-code:
+         * P2V5B_PGOOD fail.
+         */
+        _20 = 20,
+
+        /**
+         * The definition of error-code:
+         * Vdn0_PGOOD fail.
+         */
+        _21 = 21,
+
+        /**
+         * The definition of error-code:
+         * Vdn1_PGOOD fail.
+         */
+        _22 = 22,
+
+        /**
+         * The definition of error-code:
+         * P1V5_PGOOD fail.
+         */
+        _23 = 23,
+
+        /**
+         * The definition of error-code:
+         * Vio0_PGOOD fail.
+         */
+        _24 = 24,
+
+        /**
+         * The definition of error-code:
+         * Vio1_PGOOD fail.
+         */
+        _25 = 25,
+
+        /**
+         * The definition of error-code:
+         * Vdd0_PGOOD fail.
+         */
+        _26 = 26,
+
+        /**
+         * The definition of error-code:
+         * Vcs0_PGOOD fail.
+         */
+        _27 = 27,
+
+        /**
+         * The definition of error-code:
+         * Vdd1_PGOOD fail.
+         */
+        _28 = 28,
+
+        /**
+         * The definition of error-code:
+         * Vcs1_PGOOD fail.
+         */
+        _29 = 29,
+
+        /**
+         * The definition of error-code:
+         * Vddr0_PGOOD fail.
+         */
+        _30 = 30,
+
+        /**
+         * The definition of error-code:
+         * Vtt0_PGOOD fail.
+         */
+        _31 = 31,
+
+        /**
+         * The definition of error-code:
+         * Vddr1_PGOOD fail.
+         */
+        _32 = 32,
+
+        /**
+         * The definition of error-code:
+         * Vtt1_PGOOD fail.
+         */
+        _33 = 33,
+
+        /**
+         * The definition of error-code:
+         * GPU0_PGOOD fail.
+         */
+        _34 = 34,
+
+        /**
+         * The definition of error-code:
+         * GPU1_PGOOD fail.
+         */
+        _35 = 35,
+
+        /**
+         * The definition of error-code:
+         * PSU0PSU1_PGOOD fail.
+         */
+        _36 = 170
+    };
+};
+
+} // namespace power
+} // namespace phosphor