Messages in this thread Patch in this message | | | From | Andrzej Hajda <> | Subject | [RFC 07/15] clk: add DT parsing function | Date | Wed, 10 Dec 2014 16:48:25 +0100 |
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The patch adds function for parsing Device Tree to get clock specifier. The function could be ultimately used by clock core.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> --- drivers/clk/clkdev.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index da4bda8..bd22750 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -120,6 +120,29 @@ struct clk *of_clk_get_by_name(struct device_node *np, const char *name) return clk; } EXPORT_SYMBOL(of_clk_get_by_name); + +static int of_get_clock_spec(struct device *dev, const char *name, + struct of_phandle_args *spec) +{ + struct device_node *np = dev->of_node; + + while (np) { + int idx = 0; + + if (name) + idx = of_property_match_string(np, "clock-names", name); + + if (!of_parse_phandle_with_args(np, "clocks", "#clock-cells", + idx, spec)) + return 0; + + np = np->parent; + if (np && !of_get_property(np, "clock-ranges", NULL)) + break; + } + + return -ENOENT; +} #endif /* -- 1.9.1
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