diff --git a/plat/intel/soc/stratix10/include/s10_clock_manager.h b/plat/intel/soc/stratix10/include/s10_clock_manager.h
index 28192fa..99eb7a6 100644
--- a/plat/intel/soc/stratix10/include/s10_clock_manager.h
+++ b/plat/intel/soc/stratix10/include/s10_clock_manager.h
@@ -50,6 +50,11 @@
 #define ALT_CLKMGR_MAINPLL_VCOCALIB_HSCNT_SET(x) (((x) << 0) & 0x000000ff)
 #define ALT_CLKMGR_MAINPLL_VCOCALIB_MSCNT_SET(x) (((x) << 9) & 0x0001fe00)
 
+#define ALT_CLKMGR_MAINPLL_PLLGLOB_PSRC(x)	(((x) & 0x00030000) >> 16)
+#define ALT_CLKMGR_MAINPLL_PLLGLOB_PSRC_EOSC1	0x0
+#define ALT_CLKMGR_MAINPLL_PLLGLOB_PSRC_INTOSC	0x1
+#define ALT_CLKMGR_MAINPLL_PLLGLOB_PSRC_F2S	0x2
+
 #define ALT_CLKMGR_PERPLL			0xffd100a4
 #define ALT_CLKMGR_PERPLL_EN			0x0
 #define ALT_CLKMGR_PERPLL_BYPASS		0xc
@@ -78,6 +83,14 @@
 #define ALT_CLKMGR_PERPLL_VCOCALIB_MSCNT_SET(x) (((x) << 9) & 0x0001fe00)
 #define ALT_CLKMGR_PERPLL_VCOCALIB		0x58
 
+
+typedef struct {
+	uint32_t  clk_freq_of_eosc1;
+	uint32_t  clk_freq_of_f2h_free;
+	uint32_t  clk_freq_of_cb_intosc_ls;
+} CLOCK_SOURCE_CONFIG;
+
 void config_clkmgr_handoff(handoff *hoff_ptr);
+int get_wdt_clk(handoff *hoff_ptr);
 
 #endif