diff --git a/drivers/clk/sifive/sifive-prci.h b/drivers/clk/sifive/sifive-prci.h
index 5ce33d6..b391698 100644
--- a/drivers/clk/sifive/sifive-prci.h
+++ b/drivers/clk/sifive/sifive-prci.h
@@ -320,4 +320,8 @@
 
 int sifive_prci_clock_enable(struct __prci_clock *pc, bool enable);
 
+/* Clock driver data */
+extern const struct prci_clk_desc prci_clk_fu540;
+extern const struct prci_clk_desc prci_clk_fu740;
+
 #endif /* __SIFIVE_CLK_SIFIVE_PRCI_H */