clk: Allow clk_get_by_name() with NULL name

This allows devm_clock_get(dev, NULL) to work and get the first clock,
which is common in code ported from Linux.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20230122000252.53642-1-samuel@sholland.org

1 files changed, 2 insertions, 2 deletions

diff --git a/include/clk.h b/include/clk.h
index 138766bd49f..d91285235f7 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -167,7 +167,7 @@ int clk_get_bulk(struct udevice *dev, struct clk_bulk *bulk);
  * clk_get_by_name() - Get/request a clock by name.
  * @dev:	The client device.
  * @name:	The name of the clock to request, within the client's list of
- *		clocks.
+ *		clocks, or NULL to request the first clock in the list.
  * @clk:	A pointer to a clock struct to initialize.
  *
  * This looks up and requests a clock. The name is relative to the client
@@ -184,7 +184,7 @@ 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.
  * @node:	The client ofnode.
  * @name:	The name of the clock to request, within the client's list of
- *		clocks.
+ *		clocks, or NULL to request the first clock in the list.
  * @clk:	A pointer to a clock struct to initialize.
  *
  * Return: 0 if OK, or a negative error code.