diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_clock.h b/plat/xilinx/zynqmp/pm_service/pm_api_clock.h
index 2e7260e..666eda5 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_clock.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_clock.h
@@ -11,9 +11,264 @@
 #ifndef _PM_API_CLOCK_H_
 #define _PM_API_CLOCK_H_
 
+#include <utils_def.h>
 #include "pm_common.h"
 
 #define CLK_NAME_LEN		15
+#define MAX_PARENTS		100
+#define CLK_NA_PARENT		-1
+#define CLK_DUMMY_PARENT	-2
+
+/* Flags for parent id */
+#define PARENT_CLK_SELF		0
+#define PARENT_CLK_NODE1	1
+#define PARENT_CLK_NODE2	2
+#define PARENT_CLK_NODE3	3
+#define PARENT_CLK_NODE4	4
+#define PARENT_CLK_EXTERNAL	5
+#define PARENT_CLK_MIO0_MIO77	6
+
+#define CLK_SET_RATE_GATE	BIT(0) /* must be gated across rate change */
+#define CLK_SET_PARENT_GATE	BIT(1) /* must be gated across re-parent */
+#define CLK_SET_RATE_PARENT	BIT(2) /* propagate rate change up one level */
+#define CLK_IGNORE_UNUSED	BIT(3) /* do not gate even if unused */
+/* unused */
+#define CLK_IS_BASIC		BIT(5) /* Basic clk, can't do a to_clk_foo() */
+#define CLK_GET_RATE_NOCACHE	BIT(6) /* do not use the cached clk rate */
+#define CLK_SET_RATE_NO_REPARENT BIT(7) /* don't re-parent on rate change */
+#define CLK_GET_ACCURACY_NOCACHE BIT(8) /* do not use the cached clk accuracy */
+#define CLK_RECALC_NEW_RATES	BIT(9) /* recalc rates after notifications */
+#define CLK_SET_RATE_UNGATE	BIT(10) /* clock needs to run to set rate */
+#define CLK_IS_CRITICAL		BIT(11) /* do not gate, ever */
+/* parents need enable during gate/ungate, set rate and re-parent */
+#define CLK_OPS_PARENT_ENABLE	BIT(12)
+#define CLK_FRAC		BIT(13)
+
+#define CLK_DIVIDER_ONE_BASED		BIT(0)
+#define CLK_DIVIDER_POWER_OF_TWO	BIT(1)
+#define CLK_DIVIDER_ALLOW_ZERO		BIT(2)
+#define CLK_DIVIDER_HIWORD_MASK		BIT(3)
+#define CLK_DIVIDER_ROUND_CLOSEST	BIT(4)
+#define CLK_DIVIDER_READ_ONLY		BIT(5)
+#define CLK_DIVIDER_MAX_AT_ZERO		BIT(6)
+
+#define END_OF_CLK     "END_OF_CLK"
+
+enum clock_ids {
+	CLK_IOPLL,
+	CLK_RPLL,
+	CLK_APLL,
+	CLK_DPLL,
+	CLK_VPLL,
+	CLK_IOPLL_TO_FPD,
+	CLK_RPLL_TO_FPD,
+	CLK_APLL_TO_LPD,
+	CLK_DPLL_TO_LPD,
+	CLK_VPLL_TO_LPD,
+	CLK_ACPU,
+	CLK_ACPU_HALF,
+	CLK_DBG_FPD,
+	CLK_DBG_LPD,
+	CLK_DBG_TRACE,
+	CLK_DBG_TSTMP,
+	CLK_DP_VIDEO_REF,
+	CLK_DP_AUDIO_REF,
+	CLK_DP_STC_REF,
+	CLK_GDMA_REF,
+	CLK_DPDMA_REF,
+	CLK_DDR_REF,
+	CLK_SATA_REF,
+	CLK_PCIE_REF,
+	CLK_GPU_REF,
+	CLK_GPU_PP0_REF,
+	CLK_GPU_PP1_REF,
+	CLK_TOPSW_MAIN,
+	CLK_TOPSW_LSBUS,
+	CLK_GTGREF0_REF,
+	CLK_LPD_SWITCH,
+	CLK_LPD_LSBUS,
+	CLK_USB0_BUS_REF,
+	CLK_USB1_BUS_REF,
+	CLK_USB3_DUAL_REF,
+	CLK_USB0,
+	CLK_USB1,
+	CLK_CPU_R5,
+	CLK_CPU_R5_CORE,
+	CLK_CSU_SPB,
+	CLK_CSU_PLL,
+	CLK_PCAP,
+	CLK_IOU_SWITCH,
+	CLK_GEM_TSU_REF,
+	CLK_GEM_TSU,
+	CLK_GEM0_REF,
+	CLK_GEM1_REF,
+	CLK_GEM2_REF,
+	CLK_GEM3_REF,
+	CLK_GEM0_TX,
+	CLK_GEM1_TX,
+	CLK_GEM2_TX,
+	CLK_GEM3_TX,
+	CLK_QSPI_REF,
+	CLK_SDIO0_REF,
+	CLK_SDIO1_REF,
+	CLK_UART0_REF,
+	CLK_UART1_REF,
+	CLK_SPI0_REF,
+	CLK_SPI1_REF,
+	CLK_NAND_REF,
+	CLK_I2C0_REF,
+	CLK_I2C1_REF,
+	CLK_CAN0_REF,
+	CLK_CAN1_REF,
+	CLK_CAN0,
+	CLK_CAN1,
+	CLK_DLL_REF,
+	CLK_ADMA_REF,
+	CLK_TIMESTAMP_REF,
+	CLK_AMS_REF,
+	CLK_PL0_REF,
+	CLK_PL1_REF,
+	CLK_PL2_REF,
+	CLK_PL3_REF,
+	CLK_WDT,
+	CLK_IOPLL_INT,
+	CLK_IOPLL_PRE_SRC,
+	CLK_IOPLL_HALF,
+	CLK_IOPLL_INT_MUX,
+	CLK_IOPLL_POST_SRC,
+	CLK_RPLL_INT,
+	CLK_RPLL_PRE_SRC,
+	CLK_RPLL_HALF,
+	CLK_RPLL_INT_MUX,
+	CLK_RPLL_POST_SRC,
+	CLK_APLL_INT,
+	CLK_APLL_PRE_SRC,
+	CLK_APLL_HALF,
+	CLK_APLL_INT_MUX,
+	CLK_APLL_POST_SRC,
+	CLK_DPLL_INT,
+	CLK_DPLL_PRE_SRC,
+	CLK_DPLL_HALF,
+	CLK_DPLL_INT_MUX,
+	CLK_DPLL_POST_SRC,
+	CLK_VPLL_INT,
+	CLK_VPLL_PRE_SRC,
+	CLK_VPLL_HALF,
+	CLK_VPLL_INT_MUX,
+	CLK_VPLL_POST_SRC,
+	CLK_CAN0_MIO,
+	CLK_CAN1_MIO,
+	CLK_MAX_OUTPUT_CLK,
+};
+
+enum external_clk_ids {
+	EXT_CLK_PSS_REF = CLK_MAX_OUTPUT_CLK,
+	EXT_CLK_VIDEO,
+	EXT_CLK_PSS_ALT_REF,
+	EXT_CLK_AUX_REF,
+	EXT_CLK_GT_CRX_REF,
+	EXT_CLK_SWDT0,
+	EXT_CLK_SWDT1,
+	EXT_CLK_GEM0_EMIO,
+	EXT_CLK_GEM1_EMIO,
+	EXT_CLK_GEM2_EMIO,
+	EXT_CLK_GEM3_EMIO,
+	EXT_CLK_MIO50_OR_MIO51,
+	EXT_CLK_MIO0,
+	EXT_CLK_MIO1,
+	EXT_CLK_MIO2,
+	EXT_CLK_MIO3,
+	EXT_CLK_MIO4,
+	EXT_CLK_MIO5,
+	EXT_CLK_MIO6,
+	EXT_CLK_MIO7,
+	EXT_CLK_MIO8,
+	EXT_CLK_MIO9,
+	EXT_CLK_MIO10,
+	EXT_CLK_MIO11,
+	EXT_CLK_MIO12,
+	EXT_CLK_MIO13,
+	EXT_CLK_MIO14,
+	EXT_CLK_MIO15,
+	EXT_CLK_MIO16,
+	EXT_CLK_MIO17,
+	EXT_CLK_MIO18,
+	EXT_CLK_MIO19,
+	EXT_CLK_MIO20,
+	EXT_CLK_MIO21,
+	EXT_CLK_MIO22,
+	EXT_CLK_MIO23,
+	EXT_CLK_MIO24,
+	EXT_CLK_MIO25,
+	EXT_CLK_MIO26,
+	EXT_CLK_MIO27,
+	EXT_CLK_MIO28,
+	EXT_CLK_MIO29,
+	EXT_CLK_MIO30,
+	EXT_CLK_MIO31,
+	EXT_CLK_MIO32,
+	EXT_CLK_MIO33,
+	EXT_CLK_MIO34,
+	EXT_CLK_MIO35,
+	EXT_CLK_MIO36,
+	EXT_CLK_MIO37,
+	EXT_CLK_MIO38,
+	EXT_CLK_MIO39,
+	EXT_CLK_MIO40,
+	EXT_CLK_MIO41,
+	EXT_CLK_MIO42,
+	EXT_CLK_MIO43,
+	EXT_CLK_MIO44,
+	EXT_CLK_MIO45,
+	EXT_CLK_MIO46,
+	EXT_CLK_MIO47,
+	EXT_CLK_MIO48,
+	EXT_CLK_MIO49,
+	EXT_CLK_MIO50,
+	EXT_CLK_MIO51,
+	EXT_CLK_MIO52,
+	EXT_CLK_MIO53,
+	EXT_CLK_MIO54,
+	EXT_CLK_MIO55,
+	EXT_CLK_MIO56,
+	EXT_CLK_MIO57,
+	EXT_CLK_MIO58,
+	EXT_CLK_MIO59,
+	EXT_CLK_MIO60,
+	EXT_CLK_MIO61,
+	EXT_CLK_MIO62,
+	EXT_CLK_MIO63,
+	EXT_CLK_MIO64,
+	EXT_CLK_MIO65,
+	EXT_CLK_MIO66,
+	EXT_CLK_MIO67,
+	EXT_CLK_MIO68,
+	EXT_CLK_MIO69,
+	EXT_CLK_MIO70,
+	EXT_CLK_MIO71,
+	EXT_CLK_MIO72,
+	EXT_CLK_MIO73,
+	EXT_CLK_MIO74,
+	EXT_CLK_MIO75,
+	EXT_CLK_MIO76,
+	EXT_CLK_MIO77,
+	CLK_MAX,
+};
+
+enum clk_type {
+	CLK_TYPE_OUTPUT,
+	CLK_TYPE_EXTERNAL,
+};
+
+enum topology_type {
+	TYPE_INVALID,
+	TYPE_MUX,
+	TYPE_PLL,
+	TYPE_FIXEDFACTOR,
+	TYPE_DIV1,
+	TYPE_DIV2,
+	TYPE_GATE,
+};
 
 enum pm_ret_status pm_api_clock_get_name(unsigned int clock_id, char *name);
 enum pm_ret_status pm_api_clock_get_topology(unsigned int clock_id,
@@ -51,4 +306,5 @@
 						unsigned int data);
 enum pm_ret_status pm_api_clk_get_pll_frac_data(unsigned int pll,
 						unsigned int *data);
+
 #endif /* _PM_API_CLOCK_H_ */