045ecad0fd
Add clock controller for CMU ISP clock domain on Exynos3250, providing clocks for FIMC-IS subsystem. [b.michalska: use samsung_cmu_register_one to register the provider; updated DT binding documentation] Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Beata Michalska <b.michalska@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> [s.nawrocki: added __init attribute which was missing in function exynos3250_cmu_platform_init() in function, which has been] Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
57 lines
1.7 KiB
Text
57 lines
1.7 KiB
Text
* Samsung Exynos3250 Clock Controller
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The Exynos3250 clock controller generates and supplies clock to various
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controllers within the Exynos3250 SoC.
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Required Properties:
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- compatible: should be one of the following.
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- "samsung,exynos3250-cmu" - controller compatible with Exynos3250 SoC.
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- "samsung,exynos3250-cmu-dmc" - controller compatible with
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Exynos3250 SoC for Dynamic Memory Controller domain.
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- "samsung,exynos3250-cmu-isp" - ISP block clock controller compatible
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with Exynos3250 SOC
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- reg: physical base address of the controller and length of memory mapped
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region.
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- #clock-cells: should be 1.
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Each clock is assigned an identifier and client nodes can use this identifier
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to specify the clock which they consume.
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All available clocks are defined as preprocessor macros in
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dt-bindings/clock/exynos3250.h header and can be used in device
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tree sources.
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Example 1: Examples of clock controller nodes are listed below.
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cmu: clock-controller@10030000 {
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compatible = "samsung,exynos3250-cmu";
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reg = <0x10030000 0x20000>;
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#clock-cells = <1>;
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};
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cmu_dmc: clock-controller@105C0000 {
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compatible = "samsung,exynos3250-cmu-dmc";
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reg = <0x105C0000 0x2000>;
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#clock-cells = <1>;
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};
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cmu_isp: clock-controller@10048000 {
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compatible = "samsung,exynos3250-cmu-isp";
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reg = <0x10048000 0x1000>;
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#clock-cells = <1>;
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};
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Example 2: UART controller node that consumes the clock generated by the clock
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controller. Refer to the standard clock bindings for information
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about 'clocks' and 'clock-names' property.
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serial@13800000 {
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compatible = "samsung,exynos4210-uart";
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reg = <0x13800000 0x100>;
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interrupts = <0 109 0>;
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clocks = <&cmu CLK_UART0>, <&cmu CLK_SCLK_UART0>;
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clock-names = "uart", "clk_uart_baud0";
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};
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