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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+* Samsung Exynos3250 Clock Controller
+
+The Exynos3250 clock controller generates and supplies clock to various
+controllers within the Exynos3250 SoC.
+
+Required Properties:
+
+- compatible: should be one of the following.
+ - "samsung,exynos3250-cmu" - controller compatible with Exynos3250 SoC.
+ - "samsung,exynos3250-cmu-dmc" - controller compatible with
+ Exynos3250 SoC for Dynamic Memory Controller domain.
+ - "samsung,exynos3250-cmu-isp" - ISP block clock controller compatible
+ with Exynos3250 SOC
+
+- 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/exynos3250.h header and can be used in device
+tree sources.
+
+Example 1: Examples of clock controller nodes are listed below.
+
+ cmu: clock-controller@10030000 {
+ compatible = "samsung,exynos3250-cmu";
+ reg = <0x10030000 0x20000>;
+ #clock-cells = <1>;
+ };
+
+ cmu_dmc: clock-controller@105c0000 {
+ compatible = "samsung,exynos3250-cmu-dmc";
+ reg = <0x105C0000 0x2000>;
+ #clock-cells = <1>;
+ };
+
+ cmu_isp: clock-controller@10048000 {
+ compatible = "samsung,exynos3250-cmu-isp";
+ reg = <0x10048000 0x1000>;
+ #clock-cells = <1>;
+ };
+
+Example 2: UART controller node that consumes the clock generated by the clock
+ controller. Refer to the standard clock bindings for information
+ about 'clocks' and 'clock-names' property.
+
+ serial@13800000 {
+ compatible = "samsung,exynos4210-uart";
+ reg = <0x13800000 0x100>;
+ interrupts = <0 109 0>;
+ clocks = <&cmu CLK_UART0>, <&cmu CLK_SCLK_UART0>;
+ clock-names = "uart", "clk_uart_baud0";
+ };