[PATCH v3] clk: add device tree fixed-factor-clock binding support

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Gregory CLEMENT]

Hi,

Since august this patch finally find a user:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/arch/arc/boot/dts/abilis_*.dtsi.
So I resusrected this patch with small changed suggested by Christian
Ruppert.

Mike,
if you still agree with this patch, you can apply it.
It was based on 3.9-rc6 but it can also be applied on clk-next
without any conflict.

Changelog:
v2 -> v3

- Updating the binding documentation bu using clock-div and clock-mul
  instead of div and mul
- Adding the tested-by tag from by Christian Ruppert

v1 -> v2
- Adding CLK_OF_DECLARE
- Using IS_ERR to test the clk value

Thanks,

Gregory CLEMENT (1):
  clk: add device tree fixed-factor-clock binding support

 .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
 drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
 include/linux/clk-provider.h                       |    2 ++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt

-- 
1.7.9.5

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Gregory CLEMENT]

Hi,

Since august this patch finally find a user:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/arch/arc/boot/dts/abilis_*.dtsi.
So I resusrected this patch with small changed suggested by Christian
Ruppert.

Mike,
if you still agree with this patch, you can apply it.
It was based on 3.9-rc6 but it can also be applied on clk-next
without any conflict.

Changelog:
v2 -> v3

- Updating the binding documentation bu using clock-div and clock-mul
  instead of div and mul
- Adding the tested-by tag from by Christian Ruppert

v1 -> v2
- Adding CLK_OF_DECLARE
- Using IS_ERR to test the clk value

Thanks,

Gregory CLEMENT (1):
  clk: add device tree fixed-factor-clock binding support

 .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
 drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
 include/linux/clk-provider.h                       |    2 ++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt

-- 
1.7.9.5

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Gregory CLEMENT]

Hi,

Since august this patch finally find a user:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/arch/arc/boot/dts/abilis_*.dtsi.
So I resusrected this patch with small changed suggested by Christian
Ruppert.

Mike,
if you still agree with this patch, you can apply it.
It was based on 3.9-rc6 but it can also be applied on clk-next
without any conflict.

Changelog:
v2 -> v3

- Updating the binding documentation bu using clock-div and clock-mul
  instead of div and mul
- Adding the tested-by tag from by Christian Ruppert

v1 -> v2
- Adding CLK_OF_DECLARE
- Using IS_ERR to test the clk value

Thanks,

Gregory CLEMENT (1):
  clk: add device tree fixed-factor-clock binding support

 .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
 drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
 include/linux/clk-provider.h                       |    2 ++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt

-- 
1.7.9.5

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Gregory CLEMENT]

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>
---
 .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
 drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
 include/linux/clk-provider.h                       |    2 ++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt

diff --git a/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
new file mode 100644
index 0000000..5757f9a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
@@ -0,0 +1,24 @@
+Binding for simple fixed factor rate clock sources.
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be "fixed-factor-clock".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clock-div: fixed divider.
+- clock-mult: fixed multiplier.
+- clocks: parent clock.
+
+Optional properties:
+- clock-output-names : From common clock binding.
+
+Example:
+	clock {
+		compatible = "fixed-factor-clock";
+		clocks = <&parentclk>;
+		#clock-cells = <0>;
+		div = <2>;
+		mult = <1>;
+	};
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index 1ef271e..9ff7d51 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
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 7f197d7..7ea501b 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -325,6 +325,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		unsigned int mult, unsigned int div);
 
+void of_fixed_factor_clk_setup(struct device_node *node);
+
 /**
  * clk_register - allocate a new clock, register it and return an opaque cookie
  * @dev: device that is registering this clock
-- 
1.7.9.5

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Gregory CLEMENT]

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>
---
 .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
 drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
 include/linux/clk-provider.h                       |    2 ++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt

diff --git a/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
new file mode 100644
index 0000000..5757f9a
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
@@ -0,0 +1,24 @@
+Binding for simple fixed factor rate clock sources.
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be "fixed-factor-clock".
+- #clock-cells : from common clock binding; shall be set to 0.
+- clock-div: fixed divider.
+- clock-mult: fixed multiplier.
+- clocks: parent clock.
+
+Optional properties:
+- clock-output-names : From common clock binding.
+
+Example:
+	clock {
+		compatible = "fixed-factor-clock";
+		clocks = <&parentclk>;
+		#clock-cells = <0>;
+		div = <2>;
+		mult = <1>;
+	};
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index 1ef271e..9ff7d51 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
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 7f197d7..7ea501b 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -325,6 +325,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		unsigned int mult, unsigned int div);
 
+void of_fixed_factor_clk_setup(struct device_node *node);
+
 /**
  * clk_register - allocate a new clock, register it and return an opaque cookie
  * @dev: device that is registering this clock
-- 
1.7.9.5

Re: [PATCH v3] clk: add device tree fixed-factor-clock binding support

[Mike Turquette]

Quoting Gregory CLEMENT (2013-04-12 04:57:44)
> 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>

Nice.  Taken into clk-next.

Thanks,
Mike

> ---
>  .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
>  drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
>  include/linux/clk-provider.h                       |    2 ++
>  3 files changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> new file mode 100644
> index 0000000..5757f9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> @@ -0,0 +1,24 @@
> +Binding for simple fixed factor rate clock sources.
> +
> +This binding uses the common clock binding[1].
> +
> +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
> +
> +Required properties:
> +- compatible : shall be "fixed-factor-clock".
> +- #clock-cells : from common clock binding; shall be set to 0.
> +- clock-div: fixed divider.
> +- clock-mult: fixed multiplier.
> +- clocks: parent clock.
> +
> +Optional properties:
> +- clock-output-names : From common clock binding.
> +
> +Example:
> +       clock {
> +               compatible = "fixed-factor-clock";
> +               clocks = <&parentclk>;
> +               #clock-cells = <0>;
> +               div = <2>;
> +               mult = <1>;
> +       };
> diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
> index 1ef271e..9ff7d51 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
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 7f197d7..7ea501b 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -325,6 +325,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
>                 const char *parent_name, unsigned long flags,
>                 unsigned int mult, unsigned int div);
>  
> +void of_fixed_factor_clk_setup(struct device_node *node);
> +
>  /**
>   * clk_register - allocate a new clock, register it and return an opaque cookie
>   * @dev: device that is registering this clock
> -- 
> 1.7.9.5

Re: [PATCH v3] clk: add device tree fixed-factor-clock binding support

[Mike Turquette]

Quoting Gregory CLEMENT (2013-04-12 04:57:44)
> 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>

Nice.  Taken into clk-next.

Thanks,
Mike

> ---
>  .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
>  drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
>  include/linux/clk-provider.h                       |    2 ++
>  3 files changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> new file mode 100644
> index 0000000..5757f9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> @@ -0,0 +1,24 @@
> +Binding for simple fixed factor rate clock sources.
> +
> +This binding uses the common clock binding[1].
> +
> +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
> +
> +Required properties:
> +- compatible : shall be "fixed-factor-clock".
> +- #clock-cells : from common clock binding; shall be set to 0.
> +- clock-div: fixed divider.
> +- clock-mult: fixed multiplier.
> +- clocks: parent clock.
> +
> +Optional properties:
> +- clock-output-names : From common clock binding.
> +
> +Example:
> +       clock {
> +               compatible = "fixed-factor-clock";
> +               clocks = <&parentclk>;
> +               #clock-cells = <0>;
> +               div = <2>;
> +               mult = <1>;
> +       };
> diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
> index 1ef271e..9ff7d51 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
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 7f197d7..7ea501b 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -325,6 +325,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
>                 const char *parent_name, unsigned long flags,
>                 unsigned int mult, unsigned int div);
>  
> +void of_fixed_factor_clk_setup(struct device_node *node);
> +
>  /**
>   * clk_register - allocate a new clock, register it and return an opaque cookie
>   * @dev: device that is registering this clock
> -- 
> 1.7.9.5

[PATCH v3] clk: add device tree fixed-factor-clock binding support

[Mike Turquette]

Quoting Gregory CLEMENT (2013-04-12 04:57:44)
> 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>

Nice.  Taken into clk-next.

Thanks,
Mike

> ---
>  .../bindings/clock/fixed-factor-clock.txt          |   24 +++++++++++++
>  drivers/clk/clk-fixed-factor.c                     |   36 ++++++++++++++++++++
>  include/linux/clk-provider.h                       |    2 ++
>  3 files changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> new file mode 100644
> index 0000000..5757f9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/fixed-factor-clock.txt
> @@ -0,0 +1,24 @@
> +Binding for simple fixed factor rate clock sources.
> +
> +This binding uses the common clock binding[1].
> +
> +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
> +
> +Required properties:
> +- compatible : shall be "fixed-factor-clock".
> +- #clock-cells : from common clock binding; shall be set to 0.
> +- clock-div: fixed divider.
> +- clock-mult: fixed multiplier.
> +- clocks: parent clock.
> +
> +Optional properties:
> +- clock-output-names : From common clock binding.
> +
> +Example:
> +       clock {
> +               compatible = "fixed-factor-clock";
> +               clocks = <&parentclk>;
> +               #clock-cells = <0>;
> +               div = <2>;
> +               mult = <1>;
> +       };
> diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
> index 1ef271e..9ff7d51 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
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 7f197d7..7ea501b 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -325,6 +325,8 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name,
>                 const char *parent_name, unsigned long flags,
>                 unsigned int mult, unsigned int div);
>  
> +void of_fixed_factor_clk_setup(struct device_node *node);
> +
>  /**
>   * clk_register - allocate a new clock, register it and return an opaque cookie
>   * @dev: device that is registering this clock
> -- 
> 1.7.9.5