* [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 11:57 ` Gregory CLEMENT 0 siblings, 0 replies; 8+ messages in thread From: Gregory CLEMENT @ 2013-04-12 11:57 UTC (permalink / raw) To: linux-arm-kernel 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 11:57 ` Gregory CLEMENT 0 siblings, 0 replies; 8+ messages in thread From: Gregory CLEMENT @ 2013-04-12 11:57 UTC (permalink / raw) To: Mike Turquette, Grant Likely, Rob Herring, linux-kernel, linux-arm-kernel, devicetree-discuss Cc: Shawn Guo, Christian Ruppert, 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 11:57 ` Gregory CLEMENT 0 siblings, 0 replies; 8+ messages in thread From: Gregory CLEMENT @ 2013-04-12 11:57 UTC (permalink / raw) To: Mike Turquette, Grant Likely, Rob Herring, linux-kernel, linux-arm-kernel, devicetree-discuss Cc: Gregory CLEMENT, Christian Ruppert, Shawn Guo 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v3] clk: add device tree fixed-factor-clock binding support 2013-04-12 11:57 ` Gregory CLEMENT @ 2013-04-12 11:57 ` Gregory CLEMENT -1 siblings, 0 replies; 8+ messages in thread From: Gregory CLEMENT @ 2013-04-12 11:57 UTC (permalink / raw) To: linux-arm-kernel 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 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 11:57 ` Gregory CLEMENT 0 siblings, 0 replies; 8+ messages in thread From: Gregory CLEMENT @ 2013-04-12 11:57 UTC (permalink / raw) To: Mike Turquette, Grant Likely, Rob Herring, linux-kernel, linux-arm-kernel, devicetree-discuss Cc: Shawn Guo, Christian Ruppert, 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 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3] clk: add device tree fixed-factor-clock binding support 2013-04-12 11:57 ` Gregory CLEMENT (?) @ 2013-04-12 17:55 ` Mike Turquette -1 siblings, 0 replies; 8+ messages in thread From: Mike Turquette @ 2013-04-12 17:55 UTC (permalink / raw) To: linux-arm-kernel 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 17:55 ` Mike Turquette 0 siblings, 0 replies; 8+ messages in thread From: Mike Turquette @ 2013-04-12 17:55 UTC (permalink / raw) To: Gregory CLEMENT, Grant Likely, Rob Herring, linux-kernel, linux-arm-kernel, devicetree-discuss Cc: Shawn Guo, Christian Ruppert, Gregory CLEMENT 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v3] clk: add device tree fixed-factor-clock binding support @ 2013-04-12 17:55 ` Mike Turquette 0 siblings, 0 replies; 8+ messages in thread From: Mike Turquette @ 2013-04-12 17:55 UTC (permalink / raw) To: Grant Likely, Rob Herring, linux-kernel, linux-arm-kernel, devicetree-discuss Cc: Shawn Guo, Christian Ruppert, Gregory CLEMENT 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 ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-04-12 17:55 UTC | newest] Thread overview: 8+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-04-12 11:57 [PATCH v3] clk: add device tree fixed-factor-clock binding support Gregory CLEMENT 2013-04-12 11:57 ` Gregory CLEMENT 2013-04-12 11:57 ` Gregory CLEMENT 2013-04-12 11:57 ` Gregory CLEMENT 2013-04-12 11:57 ` Gregory CLEMENT 2013-04-12 17:55 ` Mike Turquette 2013-04-12 17:55 ` Mike Turquette 2013-04-12 17:55 ` Mike Turquette
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