diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index aefa53a90059..f362a1d88633 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -92,8 +92,8 @@ struct cpg_core_clk {
 	unsigned int conf;
 	const struct clk_div_table *dtable;
 	const char * const *parent_names;
-	int flag;
-	int mux_flags;
+	u32 flag;
+	u32 mux_flags;
 	int num_parents;
 };