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authorGregory CLEMENT <gregory.clement@free-electrons.com>2013-04-12 13:57:44 +0200
committerMike Turquette <mturquette@linaro.org>2013-04-12 10:52:23 -0700
commit79b16641efabd14944dbfc2fde2ae1e8ae8413bc (patch)
tree444048b6f6b4ec48aea660d446e411194622e785 /drivers/clk/clk-fixed-factor.c
parentfb72a0590b770f7da6a02bde6b8a147a3d9f6168 (diff)
downloadlinux-79b16641efabd14944dbfc2fde2ae1e8ae8413bc.tar.gz
clk: add device tree fixed-factor-clock binding support
Add support for DT "fixed-factor-clock" binding to the common fixed factor clock support. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/clk-fixed-factor.c')
-rw-r--r--drivers/clk/clk-fixed-factor.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index 1ef271e4759..9ff7d510faa 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -11,6 +11,7 @@
#include <linux/clk-provider.h>
#include <linux/slab.h>
#include <linux/err.h>
+#include <linux/of.h>
/*
* DOC: basic fixed multiplier and divider clock that cannot gate
@@ -96,3 +97,38 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
return clk;
}
+#ifdef CONFIG_OF
+/**
+ * of_fixed_factor_clk_setup() - Setup function for simple fixed factor clock
+ */
+void __init of_fixed_factor_clk_setup(struct device_node *node)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ const char *parent_name;
+ u32 div, mult;
+
+ if (of_property_read_u32(node, "clock-div", &div)) {
+ pr_err("%s Fixed factor clock <%s> must have a clock-div property\n",
+ __func__, node->name);
+ return;
+ }
+
+ if (of_property_read_u32(node, "clock-mult", &mult)) {
+ pr_err("%s Fixed factor clock <%s> must have a clokc-mult property\n",
+ __func__, node->name);
+ return;
+ }
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ clk = clk_register_fixed_factor(NULL, clk_name, parent_name, 0,
+ mult, div);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+EXPORT_SYMBOL_GPL(of_fixed_factor_clk_setup);
+CLK_OF_DECLARE(fixed_factor_clk, "fixed-factor-clock",
+ of_fixed_factor_clk_setup);
+#endif