diff --git a/plat/intel/soc/agilex/include/agilex_clock_manager.h b/plat/intel/soc/agilex/include/agilex_clock_manager.h
index f39d475..8ec8e59 100644
--- a/plat/intel/soc/agilex/include/agilex_clock_manager.h
+++ b/plat/intel/soc/agilex/include/agilex_clock_manager.h
@@ -127,5 +127,6 @@
 uint32_t get_wdt_clk(void);
 uint32_t get_uart_clk(void);
 uint32_t get_mmc_clk(void);
+uint32_t get_cpu_clk(void);
 
 #endif
diff --git a/plat/intel/soc/agilex/include/socfpga_plat_def.h b/plat/intel/soc/agilex/include/socfpga_plat_def.h
index b216ab1..4d7198c 100644
--- a/plat/intel/soc/agilex/include/socfpga_plat_def.h
+++ b/plat/intel/soc/agilex/include/socfpga_plat_def.h
@@ -35,6 +35,4 @@
 /* Platform specific system counter */
 #define PLAT_SYS_COUNTER_FREQ_IN_MHZ	get_cpu_clk()
 
-uint32_t get_cpu_clk(void);
-
 #endif /* PLAT_SOCFPGA_DEF_H */
diff --git a/plat/intel/soc/common/socfpga_delay_timer.c b/plat/intel/soc/common/socfpga_delay_timer.c
index dcd51e2..8fce5cf 100644
--- a/plat/intel/soc/common/socfpga_delay_timer.c
+++ b/plat/intel/soc/common/socfpga_delay_timer.c
@@ -10,6 +10,15 @@
 #include <lib/mmio.h>
 #include "socfpga_plat_def.h"
 
+
+#if PLATFORM_MODEL == PLAT_SOCFPGA_AGILEX
+#include "agilex_clock_manager.h"
+#elif PLATFORM_MODEL == PLAT_SOCFPGA_N5X
+#include "n5x_clock_manager.h"
+#elif PLATFORM_MODEL == PLAT_SOCFPGA_STRATIX10
+#include "s10_clock_manager.h"
+#endif
+
 #define SOCFPGA_GLOBAL_TIMER		0xffd01000
 #define SOCFPGA_GLOBAL_TIMER_EN		0x3
 
@@ -43,6 +52,8 @@
 	socfpga_delay_timer_init_args();
 	mmio_write_32(SOCFPGA_GLOBAL_TIMER, SOCFPGA_GLOBAL_TIMER_EN);
 
+	NOTICE("BL31 CLK freq = %d MHz\n", PLAT_SYS_COUNTER_FREQ_IN_MHZ);
+
 	asm volatile("msr cntp_ctl_el0, %0" : : "r" (SOCFPGA_GLOBAL_TIMER_EN));
 	asm volatile("msr cntp_tval_el0, %0" : : "r" (~0));
 
diff --git a/plat/intel/soc/n5x/include/n5x_clock_manager.h b/plat/intel/soc/n5x/include/n5x_clock_manager.h
new file mode 100644
index 0000000..6e2b978
--- /dev/null
+++ b/plat/intel/soc/n5x/include/n5x_clock_manager.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2019-2023, Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef CLOCKMANAGER_H
+#define CLOCKMANAGER_H
+
+#include "socfpga_handoff.h"
+
+/* MACRO DEFINITION */
+#define SOCFPGA_GLOBAL_TIMER				0xffd01000
+#define SOCFPGA_GLOBAL_TIMER_EN				0x3
+
+#define CLKMGR_PLLGLOB_VCO_PSRC_MASK			GENMASK(17, 16)
+#define CLKMGR_PLLGLOB_VCO_PSRC_OFFSET			16
+#define CLKMGR_PLLDIV_FDIV_MASK				GENMASK(16, 8)
+#define CLKMGR_PLLDIV_FDIV_OFFSET			8
+#define CLKMGR_PLLDIV_REFCLKDIV_MASK			GENMASK(5, 0)
+#define CLKMGR_PLLDIV_REFCLKDIV_OFFSET			0
+#define CLKMGR_PLLDIV_OUTDIV_QDIV_MASK			GENMASK(26, 24)
+#define CLKMGR_PLLDIV_OUTDIV_QDIV_OFFSET		24
+
+#define CLKMGR_PLLOUTDIV_C1CNT_MASK			GENMASK(12, 8)
+#define CLKMGR_PLLOUTDIV_C1CNT_OFFSET			8
+#define CLKMGR_PLLDIV_OUTDIV_QDIV_MASK			GENMASK(26, 24)
+#define CLKMGR_PLLDIV_OUTDIV_QDIV_OFFSET		24
+#define CLKMGR_CLKSRC_MASK				GENMASK(18, 16)
+#define CLKMGR_CLKSRC_OFFSET				16
+#define CLKMGR_NOCDIV_DIVIDER_MASK			GENMASK(1, 0)
+#define CLKMGR_NOCDIV_L4MAIN_OFFSET			0
+
+#define CLKMGR_INTOSC_HZ				400000000
+#define CLKMGR_VCO_PSRC_EOSC1				0
+#define CLKMGR_VCO_PSRC_INTOSC				1
+#define CLKMGR_VCO_PSRC_F2S				2
+#define CLKMGR_CLKSRC_MAIN				0
+#define CLKMGR_CLKSRC_PER				1
+
+#define CLKMGR_N5X_BASE					0xffd10000
+#define CLKMGR_MAINPLL_NOCCLK				0x40
+#define CLKMGR_MAINPLL_NOCDIV				0x44
+#define CLKMGR_MAINPLL_PLLGLOB				0x48
+#define CLKMGR_MAINPLL_PLLOUTDIV			0x54
+#define CLKMGR_MAINPLL_PLLDIV				0x50
+#define CLKMGR_PERPLL_PLLGLOB				0x9c
+#define CLKMGR_PERPLL_PLLDIV				0xa4
+#define CLKMGR_PERPLL_PLLOUTDIV				0xa8
+
+/* FUNCTION DEFINITION */
+uint64_t clk_get_pll_output_hz(void);
+uint64_t get_l4_clk(void);
+uint32_t get_clk_freq(uint32_t psrc_reg);
+uint32_t get_cpu_clk(void);
+
+#endif
diff --git a/plat/intel/soc/n5x/include/socfpga_plat_def.h b/plat/intel/soc/n5x/include/socfpga_plat_def.h
index 4c36f91..eec8411 100644
--- a/plat/intel/soc/n5x/include/socfpga_plat_def.h
+++ b/plat/intel/soc/n5x/include/socfpga_plat_def.h
@@ -32,11 +32,6 @@
 #define SOCFPGA_SOC2FPGA_SCR_REG_BASE			U(0xffd21200)
 #define SOCFPGA_LWSOC2FPGA_SCR_REG_BASE			U(0xffd21300)
 
-/* Platform specific system counter */
-/*
- * In N5X the clk init is done in Uboot SPL.
- * BL31 shall bypass the clk init and only provides other APIs.
- */
-#define PLAT_SYS_COUNTER_FREQ_IN_MHZ	(400)
+#define PLAT_SYS_COUNTER_FREQ_IN_MHZ	get_cpu_clk()
 
 #endif /* PLAT_SOCFPGA_DEF_H */
diff --git a/plat/intel/soc/n5x/platform.mk b/plat/intel/soc/n5x/platform.mk
index 4f3da4e..7afeb74 100644
--- a/plat/intel/soc/n5x/platform.mk
+++ b/plat/intel/soc/n5x/platform.mk
@@ -36,6 +36,7 @@
 		lib/cpus/aarch64/cortex_a53.S				\
 		plat/common/plat_psci_common.c				\
 		plat/intel/soc/n5x/bl31_plat_setup.c			\
+		plat/intel/soc/n5x/soc/n5x_clock_manager.c		\
 		plat/intel/soc/common/socfpga_psci.c			\
 		plat/intel/soc/common/socfpga_sip_svc.c			\
 		plat/intel/soc/common/socfpga_sip_svc_v2.c		\
diff --git a/plat/intel/soc/n5x/soc/n5x_clock_manager.c b/plat/intel/soc/n5x/soc/n5x_clock_manager.c
new file mode 100644
index 0000000..c09b25b
--- /dev/null
+++ b/plat/intel/soc/n5x/soc/n5x_clock_manager.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2019-2023, Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <lib/mmio.h>
+
+#include "n5x_clock_manager.h"
+#include "socfpga_system_manager.h"
+
+
+uint64_t clk_get_pll_output_hz(void)
+{
+	uint32_t clksrc;
+	uint32_t scr_reg;
+	uint32_t divf;
+	uint32_t divr;
+	uint32_t divq;
+	uint32_t power = 1;
+	uint64_t clock = 0;
+
+	clksrc = ((get_clk_freq(CLKMGR_PERPLL_PLLGLOB)) &
+			CLKMGR_PLLGLOB_VCO_PSRC_MASK) >> CLKMGR_PLLGLOB_VCO_PSRC_OFFSET;
+
+	switch (clksrc) {
+	case CLKMGR_VCO_PSRC_EOSC1:
+		scr_reg = SOCFPGA_SYSMGR(BOOT_SCRATCH_COLD_1);
+		clock = mmio_read_32(scr_reg);
+		break;
+
+	case CLKMGR_VCO_PSRC_INTOSC:
+		clock = CLKMGR_INTOSC_HZ;
+		break;
+
+	case CLKMGR_VCO_PSRC_F2S:
+		scr_reg = SOCFPGA_SYSMGR(BOOT_SCRATCH_COLD_2);
+		clock = mmio_read_32(scr_reg);
+		break;
+	}
+
+	divf = ((get_clk_freq(CLKMGR_PERPLL_PLLDIV)) &
+			CLKMGR_PLLDIV_FDIV_MASK) >> CLKMGR_PLLDIV_FDIV_OFFSET;
+	divr = ((get_clk_freq(CLKMGR_PERPLL_PLLDIV)) &
+			CLKMGR_PLLDIV_REFCLKDIV_MASK) >> CLKMGR_PLLDIV_REFCLKDIV_OFFSET;
+	divq = ((get_clk_freq(CLKMGR_PERPLL_PLLDIV)) &
+			CLKMGR_PLLDIV_OUTDIV_QDIV_MASK) >> CLKMGR_PLLDIV_OUTDIV_QDIV_OFFSET;
+
+	while (divq) {
+		power *= 2;
+		divq--;
+	}
+
+	return ((clock * 2 * (divf + 1)) / ((divr + 1) * power));
+}
+
+uint64_t get_l4_clk(void)
+{
+	uint32_t clock = 0;
+	uint32_t mainpll_c1cnt;
+	uint32_t perpll_c1cnt;
+	uint32_t clksrc;
+
+	mainpll_c1cnt = ((get_clk_freq(CLKMGR_MAINPLL_PLLOUTDIV)) &
+			CLKMGR_PLLOUTDIV_C1CNT_MASK) >> CLKMGR_PLLOUTDIV_C1CNT_OFFSET;
+
+	perpll_c1cnt = ((get_clk_freq(CLKMGR_PERPLL_PLLOUTDIV)) &
+			CLKMGR_PLLOUTDIV_C1CNT_MASK) >> CLKMGR_PLLOUTDIV_C1CNT_OFFSET;
+
+	clksrc = ((get_clk_freq(CLKMGR_MAINPLL_NOCCLK)) & CLKMGR_CLKSRC_MASK) >>
+			CLKMGR_CLKSRC_OFFSET;
+
+	switch (clksrc) {
+	case CLKMGR_CLKSRC_MAIN:
+		clock = clk_get_pll_output_hz();
+		clock /= 1 + mainpll_c1cnt;
+		break;
+
+	case CLKMGR_CLKSRC_PER:
+		clock = clk_get_pll_output_hz();
+		clock /= 1 + perpll_c1cnt;
+		break;
+
+	default:
+		return 0;
+	}
+
+	clock /= BIT(((get_clk_freq(CLKMGR_MAINPLL_NOCDIV)) >>
+			CLKMGR_NOCDIV_L4MAIN_OFFSET) & CLKMGR_NOCDIV_DIVIDER_MASK);
+
+	return clock;
+}
+
+/* Calculate clock frequency based on parameter */
+uint32_t get_clk_freq(uint32_t psrc_reg)
+{
+	uint32_t clk_psrc;
+
+	clk_psrc = mmio_read_32(CLKMGR_N5X_BASE + psrc_reg);
+
+	return clk_psrc;
+}
+
+/* Get cpu freq clock */
+uint32_t get_cpu_clk(void)
+{
+	uint32_t cpu_clk = 0;
+
+	cpu_clk = get_l4_clk()/PLAT_SYS_COUNTER_CONVERT_TO_MHZ;
+
+	return cpu_clk;
+}
diff --git a/plat/intel/soc/stratix10/include/s10_clock_manager.h b/plat/intel/soc/stratix10/include/s10_clock_manager.h
index cf57df3..661e204 100644
--- a/plat/intel/soc/stratix10/include/s10_clock_manager.h
+++ b/plat/intel/soc/stratix10/include/s10_clock_manager.h
@@ -95,5 +95,6 @@
 uint32_t get_mmc_clk(void);
 uint32_t get_l3_clk(uint32_t ref_clk);
 uint32_t get_ref_clk(uint32_t pllglob);
+uint32_t get_cpu_clk(void);
 
 #endif
diff --git a/plat/intel/soc/stratix10/include/socfpga_plat_def.h b/plat/intel/soc/stratix10/include/socfpga_plat_def.h
index 516cc75..da6414f 100644
--- a/plat/intel/soc/stratix10/include/socfpga_plat_def.h
+++ b/plat/intel/soc/stratix10/include/socfpga_plat_def.h
@@ -34,7 +34,5 @@
 /* Platform specific system counter */
 #define PLAT_SYS_COUNTER_FREQ_IN_MHZ	get_cpu_clk()
 
-uint32_t get_cpu_clk(void);
-
 #endif /* PLATSOCFPGA_DEF_H */