Hi Stephen, again

quoted

I've seen bindings that have the 'clocks' property at the top
level and the appropriate 'clock-names' property to relate the
clocks to a subnode.

 	sound_soc {
		clocks = <&xxx>, <&xxx>;
		clock-names = "cpu", "codec";
 		...
 		cpu {
 			...
 		};
 		codec {
 			...
 		};
 	};

Then the subnodes call clk_get() with the top level device and
the name of their node and things match up. I suppose this
binding is finalized though, so we can't really do that?

I see that the gpio framework has a similar design called
devm_get_gpiod_from_child(), so how about we add a
devm_get_clk_from_child() API? That would more closely match the
intent here, which is to restrict the clk_get() operation to
child nodes of the device passed as the first argument.

struct clk *devm_get_clk_from_child(struct device *dev,
				    const char *con_id,
				    struct device_node *child);

Thanks, but, my point is that Linux already have "of_clk_get()",
but we don't have its devm_ version.
The point is that of_clk_get() can get clock from "device_node".
Why having devm_ version become so problem ?

Best regards
---
Kuninori Morimoto