From 6233fe38048a80a9fa111ddb166ce9e8e0f5f1b3 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 27 Oct 2014 10:11:58 +0900 Subject: clk: samsung: Document binding for Exynos4415 clock controller This patch adds DT binding documentation for Exynos4415 SoC system clock controllers. Signed-off-by: Chanwoo Choi Acked-by: Kyungmin Park Signed-off-by: Sylwester Nawrocki --- .../devicetree/bindings/clock/exynos4415-clock.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/exynos4415-clock.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/clock/exynos4415-clock.txt b/Documentation/devicetree/bindings/clock/exynos4415-clock.txt new file mode 100644 index 0000000..847d98b --- /dev/null +++ b/Documentation/devicetree/bindings/clock/exynos4415-clock.txt @@ -0,0 +1,38 @@ +* Samsung Exynos4415 Clock Controller + +The Exynos4415 clock controller generates and supplies clock to various +consumer devices within the Exynos4415 SoC. + +Required properties: + +- compatible: should be one of the following: + - "samsung,exynos4415-cmu" - for the main system clocks controller + (CMU_LEFTBUS, CMU_RIGHTBUS, CMU_TOP, CMU_CPU clock domains). + - "samsung,exynos4415-cmu-dmc" - for the Exynos4415 SoC DRAM Memory + Controller (DMC) domain clock controller. + +- reg: physical base address of the controller and length of memory mapped + region. + +- #clock-cells: should be 1. + +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/exynos4415.h header and can be used in device +tree sources. + +Example 1: An example of a clock controller node is listed below. + + cmu: clock-controller@10030000 { + compatible = "samsung,exynos4415-cmu"; + reg = <0x10030000 0x18000>; + #clock-cells = <1>; + }; + + cmu-dmc: clock-controller@105C0000 { + compatible = "samsung,exynos4415-cmu-dmc"; + reg = <0x105C0000 0x3000>; + #clock-cells = <1>; + }; -- cgit v1.1