On Mon, Dec 05, 2016 at 05:23:20AM +0000, Kuninori Morimoto wrote:
From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
Some driver is using this type of DT bindings for clock (more detail, see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt).
sound_soc { ... cpu { clocks = <&xxx>; ... }; codec { clocks = <&xxx>; ... }; };
Current driver in this case uses of_clk_get() for each node, but there is no devm_of_clk_get() today. OTOH, the problem of having devm_of_clk_get() is that it encourages the use of of_clk_get() when clk_get() is more desirable.
Thus, this patch adds new devm_get_clk_from_chile() which explicitly reads as get a clock from a child node of this device. By this function, we can also use this type of DT bindings
sound_soc { clocks = <&xxx>, <&xxx>; clock-names = "cpu", "codec"; ... cpu { ... }; codec { ... }; };
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
This looks lots better, thanks.
Acked-by: Russell King rmk+kernel@armlinux.org.uk