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diff --git a/include/ethosu_types.h b/include/ethosu_types.h
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+++ b/include/ethosu_types.h
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+/*
+ * Copyright (c) 2019-2021 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ETHOSU_TYPES_H
+#define ETHOSU_TYPES_H
+
+/******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include <stdint.h>
+
+/******************************************************************************
+ * Types
+ ******************************************************************************/
+
+enum ethosu_error_codes
+{
+    ETHOSU_SUCCESS         = 0,  ///< Success
+    ETHOSU_GENERIC_FAILURE = -1, ///< Generic failure
+    ETHOSU_INVALID_PARAM   = -2  ///< Invalid parameter
+};
+
+enum ethosu_clock_q_request
+{
+    ETHOSU_CLOCK_Q_DISABLE   = 0, ///< Disable NPU signal ready for clock off.
+    ETHOSU_CLOCK_Q_ENABLE    = 1, ///< Enable NPU signal ready for clock off when stop+idle state reached.
+    ETHOSU_CLOCK_Q_UNCHANGED = 2  ///< Keep current clock q setting
+};
+
+enum ethosu_power_q_request
+{
+    ETHOSU_POWER_Q_DISABLE   = 0, ///< Disable NPU signal ready for power off.
+    ETHOSU_POWER_Q_ENABLE    = 1, ///< Enable NPU signal ready for power off when stop+idle state reached.
+    ETHOSU_POWER_Q_UNCHANGED = 2  ///< Keep current power q setting
+};
+
+struct ethosu_id
+{
+    uint32_t version_status; ///< Version status
+    uint32_t version_minor;  ///< Version minor
+    uint32_t version_major;  ///< Version major
+    uint32_t product_major;  ///< Product major
+    uint32_t arch_patch_rev; ///< Architecture version patch
+    uint32_t arch_minor_rev; ///< Architecture version minor
+    uint32_t arch_major_rev; ///< Architecture version major
+};
+
+struct ethosu_config
+{
+    uint32_t macs_per_cc;        ///< MACs per clock cycle
+    uint32_t cmd_stream_version; ///< NPU command stream version
+    uint32_t custom_dma;         ///< Custom DMA enabled
+};
+
+struct ethosu_hw_info
+{
+    struct ethosu_id version;
+    struct ethosu_config cfg;
+};
+#endif // ETHOSU_TYPES_H