Messages in this thread Patch in this message | | | From | Rob Herring <> | Subject | [PATCH 4/4] clk: add DT fixed-clock binding support | Date | Mon, 9 Apr 2012 15:25:01 -0500 |
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From: Grant Likely <grant.likely@secretlab.ca>
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> --- drivers/clk/clk-fixed-rate.c | 23 +++++++++++++++++++++++ include/linux/clk-provider.h | 2 ++ 2 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c index 90c79fb..72bd083 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 @@ -80,3 +81,25 @@ out: (parent_name ? 1 : 0), flags); } + +#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 diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 0aab294..038d312 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -153,6 +153,8 @@ 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 * -- 1.7.5.4
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