From patchwork Fri Aug 3 01:23:37 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [02/14] UBUNTU: (drop after 3.6-rc1) clk: add DT fixed-clock binding support Date: Thu, 02 Aug 2012 15:23:37 -0000 From: Ike Panhc X-Patchwork-Id: 174823 Message-Id: <1343957018-5318-1-git-send-email-ike.pan@canonical.com> To: kernel-team@lists.ubuntu.com From: Grant Likely BugLink: http://launchpad.net/bugs/1008345 Add support for DT "fixed-clock" binding to the common fixed rate clock support. Signed-off-by: Grant Likely [Rob Herring] Rework and move into common clock infrastructure Signed-off-by: Rob Herring Signed-off-by: Mike Turquette (cherry picked from commit 015ba40246497ae02a5f644d4c8adfec76d9b75c) Signed-off-by: Ike Panhc --- drivers/clk/clk-fixed-rate.c | 23 +++++++++++++++++++++++ include/linux/clk-provider.h | 2 ++ 2 files changed, 25 insertions(+) diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c index cbd2462..94493f1 100644 --- a/drivers/clk/clk-fixed-rate.c +++ b/drivers/clk/clk-fixed-rate.c @@ -14,6 +14,7 @@ #include #include #include +#include /* * 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 diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index acfef45..b97f61e 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -171,6 +171,8 @@ 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 *