diff --git a/include/drivers/brcm/dmu.h b/include/drivers/brcm/dmu.h
new file mode 100644
index 0000000..3a57bbd
--- /dev/null
+++ b/include/drivers/brcm/dmu.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2015 - 2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef DMU_H
+#define DMU_H
+
+/* Clock field should be 2 bits only */
+#define CLKCONFIG_MASK 0x3
+
+/* argument */
+struct DmuBlockEnable {
+	uint32_t sotp:1;
+	uint32_t pka_rng:1;
+	uint32_t crypto:1;
+	uint32_t spl:1;
+	uint32_t cdru_vgm:1;
+	uint32_t apbs_s0_idm:1;
+	uint32_t smau_s0_idm:1;
+};
+
+/* prototype */
+uint32_t bcm_dmu_block_enable(struct DmuBlockEnable dbe);
+uint32_t bcm_dmu_block_disable(struct DmuBlockEnable dbe);
+uint32_t bcm_set_ihost_pll_freq(uint32_t cluster_num, int ihost_pll_freq_sel);
+uint32_t bcm_get_ihost_pll_freq(uint32_t cluster_num);
+
+#define PLL_FREQ_BYPASS 0x0
+#define PLL_FREQ_FULL  0x1
+#define PLL_FREQ_HALF  0x2
+#define PLL_FREQ_QRTR  0x3
+
+#endif