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authorGrant Likely <grant.likely@secretlab.ca>2012-04-07 21:39:39 -0500
committerMike Turquette <mturquette@linaro.org>2012-07-11 17:58:46 -0700
commit015ba40246497ae02a5f644d4c8adfec76d9b75c (patch)
treebc14e32c38c79ca9e1b0d822042730aa21aac1d9 /drivers/clk/clk-fixed-rate.c
parent766e6a4ec602d0c107553b91b3434fe9c03474f4 (diff)
downloadvexpress-lsk-015ba40246497ae02a5f644d4c8adfec76d9b75c.tar.gz
clk: add DT fixed-clock binding support
Add support for DT "fixed-clock" binding to the common fixed rate clock support. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> [Rob Herring] Rework and move into common clock infrastructure Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk-fixed-rate.c')
-rw-r--r--drivers/clk/clk-fixed-rate.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c
index 7e146456972..f5ec0eebd4d 100644
--- a/drivers/clk/clk-fixed-rate.c
+++ b/drivers/clk/clk-fixed-rate.c
@@ -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