From mboxrd@z Thu Jan 1 00:00:00 1970 From: robherring2@gmail.com (Rob Herring) Date: Mon, 9 Apr 2012 15:25:01 -0500 Subject: [PATCH 4/4] clk: add DT fixed-clock binding support In-Reply-To: <1334003101-17274-1-git-send-email-robherring2@gmail.com> References: <1334003101-17274-1-git-send-email-robherring2@gmail.com> Message-ID: <1334003101-17274-5-git-send-email-robherring2@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Grant Likely 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 --- 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 #include #include +#include /* * 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