Commit 015ba402 authored by Grant Likely's avatar Grant Likely Committed by Mike Turquette
Browse files

clk: add DT fixed-clock binding support 



Add support for DT "fixed-clock" binding to the common fixed rate clock
support.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
[Rob Herring] Rework and move into common clock infrastructure
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent 766e6a4e

drivers/clk/clk-fixed-rate.c

+23 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/slab.h>

#include <linux/io.h>

#include <linux/err.h>

#include <linux/of.h>



/*

 * DOC: basic fixed-rate clock that cannot gate
@@ -79,3 +80,25 @@ struct clk *clk_register_fixed_rate(struct device *dev, const char *name, 


	return clk;

}



#ifdef CONFIG_OF

/**

 * of_fixed_clk_setup() - Setup function for simple fixed rate clock

 */

void __init of_fixed_clk_setup(struct device_node *node)

{

	struct clk *clk;

	const char *clk_name = node->name;

	u32 rate;



	if (of_property_read_u32(node, "clock-frequency", &rate))

		return;



	of_property_read_string(node, "clock-output-names", &clk_name);



	clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);

	if (clk)

		of_clk_add_provider(node, of_clk_src_simple_get, clk);

}

EXPORT_SYMBOL_GPL(of_fixed_clk_setup);

#endif

include/linux/clk-provider.h

+2 −0
Original line number Diff line number Diff line
@@ -172,6 +172,8 @@ struct clk *clk_register_fixed_rate(struct device *dev, const char *name, 
		const char *parent_name, unsigned long flags,

		unsigned long fixed_rate);



void of_fixed_clk_setup(struct device_node *np);



/**

 * struct clk_gate - gating clock

 *