2 files changed, 68 insertions, 0 deletions

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index b7e1866..93cb490 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -344,6 +344,34 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
 	return clk_get_by_index(dev, index, clk);
 }
 
+int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk)
+{
+	int index;
+
+	debug("%s(node=%p, name=%s, clk=%p)\n", __func__,
+		ofnode_get_name(node), name, clk);
+	clk->dev = NULL;
+
+	index = ofnode_stringlist_search(node, "clock-names", name);
+	if (index < 0) {
+		debug("fdt_stringlist_search() failed: %d\n", index);
+		return index;
+	}
+
+	return clk_get_by_index_nodev(node, index, clk);
+}
+
+int clk_get_optional_nodev(ofnode node, const char *name, struct clk *clk)
+{
+	int ret;
+
+	ret = clk_get_by_name_nodev(node, name, clk);
+	if (ret == -ENODATA)
+		return 0;
+
+	return ret;
+}
+
 int clk_release_all(struct clk *clk, int count)
 {
 	int i, ret;
diff --git a/include/clk.h b/include/clk.h
index a5ee53d..3336301 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -155,6 +155,34 @@ int clk_get_bulk(struct udevice *dev, struct clk_bulk *bulk);
 int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk);
 
 /**
+ * clk_get_by_name_nodev - Get/request a clock by name without a device.
+ *
+ * This is a version of clk_get_by_name() that does not use a device.
+ *
+ * @node:	The client ofnode.
+ * @name:	The name of the clock to request, within the client's list of
+ *		clocks.
+ * @clock:	A pointer to a clock struct to initialize.
+ * @return 0 if OK, or a negative error code.
+ */
+int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk);
+
+/**
+ * clock_get_optional_nodev - Get/request an optinonal clock by name
+ *		without a device.
+ * @node:	The client ofnode.
+ * @name:	The name of the clock to request.
+ * @name:	The name of the clock to request, within the client's list of
+ *		clocks.
+ * @clock:	A pointer to a clock struct to initialize.
+ *
+ * Behaves the same as clk_get_by_name_nodev() except where there is
+ * no clock producer, in this case, skip the error number -ENODATA, and
+ * the function returns 0.
+ */
+int clk_get_optional_nodev(ofnode node, const char *name, struct clk *clk);
+
+/**
  * devm_clk_get - lookup and obtain a managed reference to a clock producer.
  * @dev: device for clock "consumer"
  * @id: clock consumer ID
@@ -230,6 +258,18 @@ static inline int clk_get_by_name(struct udevice *dev, const char *name,
 	return -ENOSYS;
 }
 
+static inline int
+clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk)
+{
+	return -ENOSYS;
+}
+
+static inline int
+clk_get_optional_nodev(ofnode node, const char *name, struct clk *clk)
+{
+	return -ENOSYS;
+}
+
 static inline int clk_release_all(struct clk *clk, int count)
 {
 	return -ENOSYS;