[PATCH 1/3] clkdev: add devm_get_clk_from_child()
From: linux@armlinux.org.uk (Russell King - ARM Linux)
Date: 2016-12-09 20:31:44
Also in:
alsa-devel, linux-clk, linux-devicetree, lkml
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 <redacted> -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.