diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 364ee92e7f1..dcbc3ee1a1e 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -422,12 +422,13 @@ int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk)
 	return clk_get_by_index_nodev(node, index, clk);
 }
 
-int clk_release_all(struct clk *clk, int count)
+int clk_release_all(struct clk *clk, unsigned int count)
 {
-	int i, ret;
+	unsigned int i;
+	int ret;
 
 	for (i = 0; i < count; i++) {
-		debug("%s(clk[%d]=%p)\n", __func__, i, &clk[i]);
+		debug("%s(clk[%u]=%p)\n", __func__, i, &clk[i]);
 
 		/* check if clock has been previously requested */
 		if (!clk[i].dev)
diff --git a/include/clk.h b/include/clk.h
index d91285235f7..a342297007b 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -243,7 +243,7 @@ static inline struct clk *devm_clk_get_optional(struct udevice *dev,
  *
  * Return: zero on success, or -ve error code.
  */
-int clk_release_all(struct clk *clk, int count);
+int clk_release_all(struct clk *clk, unsigned int count);
 
 /**
  * devm_clk_put	- "free" a managed clock source
@@ -307,7 +307,7 @@ clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk)
 	return -ENOSYS;
 }
 
-static inline int clk_release_all(struct clk *clk, int count)
+static inline int clk_release_all(struct clk *clk, unsigned int count)
 {
 	return -ENOSYS;
 }