From: "Heiko Stübner" <heiko@sntech.de> To: Kukjin Kim <kgene.kim@samsung.com> Cc: t.figa@samsung.com, mturquette@linaro.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Rob Herring <rob.herring@calxeda.com>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Stephen Warren <swarren@wwwdotorg.org>, Ian Campbell <ijc+devicetree@hellion.org.uk>, devicetree@vger.kernel.org Subject: [PATCH 02/12] dt-bindings: document s3c24xx controller for external clock output Date: Fri, 13 Dec 2013 13:59:00 +0100 [thread overview] Message-ID: <201312131359.00450.heiko@sntech.de> (raw) In-Reply-To: <201312131356.40755.heiko@sntech.de> The clock settings are distributed over a regular register and parts of the misccr register. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- .../bindings/clock/samsung,s3c2410-dclk.txt | 53 ++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt new file mode 100644 index 0000000..0a1f7b1 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt @@ -0,0 +1,53 @@ +* Samsung S3C24XX External Clock Output Controller + +The S3C24XX series can generate clock signals on two clock output pads. +The clock binding described here is applicable to all SoCs in +the s3c24x family. + +Required Properties: + +- compatible: should be one of the following. + - "samsung,s3c2410-dclk" - controller in S3C2410 SoCs. + - "samsung,s3c2412-dclk" - controller in S3C2412 SoCs. + - "samsung,s3c2440-dclk" - controller in S3C2440 and S3C2442 SoCs. + - "samsung,s3c2443-dclk" - controller in S3C2443 and later SoCs. +- reg: physical base address of the controller and length of memory mapped + region. +- #clock-cells: should be 1. +- samsung,misccr: phandle to the syscon managing the misccr register, which + holds configuration settings for different soc-components (clocks, usb, ...). + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/samsung,s3c2410-dclk.h header and can be used in device +tree sources. + +To enable the clock outputs it is necessary to configure the pins accordingly +using the pinctrl framework. + +Example: + +&pinctrl_0 { + clkout0: clkout0 { + samsung,pins = "gph-9"; + samsung,pin-function = <2>; + }; + clkout1: clkout1 { + samsung,pins = "gph-10"; + samsung,pin-function = <2>; + }; +}; + +[...] + + clocks: clock-controller@56000084 { + compatible = "samsung,s3c2410-dclk"; + reg = <0x56000084 0x4>; + #clock-cells = <1>; + samsung,misccr = <&misccr>; + + pinctrl-names = "default"; + pinctrl-0 = <&clkout0>, <&clkout1>; + }; -- 1.7.10.4
WARNING: multiple messages have this Message-ID (diff)
From: heiko@sntech.de (Heiko Stübner) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 02/12] dt-bindings: document s3c24xx controller for external clock output Date: Fri, 13 Dec 2013 13:59:00 +0100 [thread overview] Message-ID: <201312131359.00450.heiko@sntech.de> (raw) In-Reply-To: <201312131356.40755.heiko@sntech.de> The clock settings are distributed over a regular register and parts of the misccr register. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- .../bindings/clock/samsung,s3c2410-dclk.txt | 53 ++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt new file mode 100644 index 0000000..0a1f7b1 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt @@ -0,0 +1,53 @@ +* Samsung S3C24XX External Clock Output Controller + +The S3C24XX series can generate clock signals on two clock output pads. +The clock binding described here is applicable to all SoCs in +the s3c24x family. + +Required Properties: + +- compatible: should be one of the following. + - "samsung,s3c2410-dclk" - controller in S3C2410 SoCs. + - "samsung,s3c2412-dclk" - controller in S3C2412 SoCs. + - "samsung,s3c2440-dclk" - controller in S3C2440 and S3C2442 SoCs. + - "samsung,s3c2443-dclk" - controller in S3C2443 and later SoCs. +- reg: physical base address of the controller and length of memory mapped + region. +- #clock-cells: should be 1. +- samsung,misccr: phandle to the syscon managing the misccr register, which + holds configuration settings for different soc-components (clocks, usb, ...). + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/samsung,s3c2410-dclk.h header and can be used in device +tree sources. + +To enable the clock outputs it is necessary to configure the pins accordingly +using the pinctrl framework. + +Example: + +&pinctrl_0 { + clkout0: clkout0 { + samsung,pins = "gph-9"; + samsung,pin-function = <2>; + }; + clkout1: clkout1 { + samsung,pins = "gph-10"; + samsung,pin-function = <2>; + }; +}; + +[...] + + clocks: clock-controller at 56000084 { + compatible = "samsung,s3c2410-dclk"; + reg = <0x56000084 0x4>; + #clock-cells = <1>; + samsung,misccr = <&misccr>; + + pinctrl-names = "default"; + pinctrl-0 = <&clkout0>, <&clkout1>; + }; -- 1.7.10.4
next prev parent reply other threads:[~2013-12-13 12:59 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-12-13 12:56 [PATCH 00/12] ARM: S3C24XX: convert s3c2410, s3c2440 s3c2442 to common clock framework Heiko Stübner 2013-12-13 12:56 ` Heiko Stübner 2013-12-13 12:57 ` [PATCH 01/12] ARM: S3C24XX: cpufreq-utils: don't write raw values to MPLLCON when using ccf Heiko Stübner 2013-12-13 12:57 ` Heiko Stübner 2014-02-08 20:23 ` Tomasz Figa 2014-02-08 20:23 ` Tomasz Figa 2013-12-13 12:59 ` Heiko Stübner [this message] 2013-12-13 12:59 ` [PATCH 02/12] dt-bindings: document s3c24xx controller for external clock output Heiko Stübner 2014-02-09 1:54 ` Tomasz Figa 2014-02-09 1:54 ` Tomasz Figa 2014-02-16 20:33 ` Heiko Stübner 2014-02-16 20:33 ` Heiko Stübner 2014-02-16 20:51 ` Tomasz Figa 2014-02-16 20:51 ` Tomasz Figa 2013-12-13 12:59 ` [PATCH 03/12] clk: samsung: add clock driver for external clock outputs Heiko Stübner 2013-12-13 12:59 ` Heiko Stübner 2013-12-31 19:46 ` Mike Turquette 2013-12-31 19:46 ` Mike Turquette 2014-02-09 2:25 ` Tomasz Figa 2014-02-09 2:25 ` Tomasz Figa 2013-12-13 13:00 ` [PATCH 04/12] ARM: S3C24XX: enable usage of common dclk if common clock framework is enabled Heiko Stübner 2013-12-13 13:00 ` Heiko Stübner 2013-12-13 13:00 ` [PATCH 05/12] ARM: S3C24XX: only store clock registers when old clock code is active Heiko Stübner 2013-12-13 13:00 ` Heiko Stübner 2013-12-13 13:00 ` [PATCH 06/12] clk: samsung: add plls used by the early s3c24xx cpus Heiko Stübner 2013-12-13 13:00 ` Heiko Stübner 2013-12-31 19:45 ` Mike Turquette 2013-12-31 19:45 ` Mike Turquette 2013-12-13 13:01 ` [PATCH 08/12] clk: samsung: add clock controller driver for s3c2410, s3c2440 and s3c2442 Heiko Stübner 2013-12-13 13:01 ` Heiko Stübner 2014-02-06 14:12 ` Mike Turquette 2014-02-06 14:12 ` Mike Turquette 2014-02-09 19:34 ` Tomasz Figa 2014-02-09 19:34 ` Tomasz Figa 2014-02-17 21:05 ` Heiko Stübner 2014-02-17 21:05 ` Heiko Stübner 2014-02-17 22:37 ` Tomasz Figa 2014-02-17 22:37 ` Tomasz Figa 2014-02-17 22:48 ` Heiko Stübner 2014-02-17 22:48 ` Heiko Stübner 2013-12-13 13:02 ` [PATCH 09/12] ARM: S3C24XX: add platform code for conversion to the common clock framework Heiko Stübner 2013-12-13 13:02 ` Heiko Stübner 2013-12-13 13:02 ` [PATCH 10/12] ARM: S3C24XX: convert s3c2440 and s3c2442 to " Heiko Stübner 2013-12-13 13:02 ` Heiko Stübner 2013-12-13 13:03 ` [PATCH 11/12] ARM: S3C24XX: convert s3c2410 " Heiko Stübner 2013-12-13 13:03 ` Heiko Stübner 2013-12-13 13:03 ` [PATCH 12/12] ARM: S3C24XX: remove legacy clock code Heiko Stübner 2013-12-13 13:03 ` Heiko Stübner 2014-02-09 19:56 ` [PATCH 00/12] ARM: S3C24XX: convert s3c2410, s3c2440 s3c2442 to common clock framework Tomasz Figa 2014-02-09 19:56 ` Tomasz Figa 2014-02-11 6:16 ` Kukjin Kim 2014-02-11 6:16 ` Kukjin Kim 2014-02-11 9:20 ` Heiko Stübner 2014-02-11 9:20 ` Heiko Stübner
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