From a595ff6eea05b919567f96d71e7e2c7b6236b8ac Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 1 Sep 2014 09:47:17 +0200 Subject: dts: update to v3.17-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/clock/samsung,s5pv210-clock.txt | 78 ++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 dts/Bindings/clock/samsung,s5pv210-clock.txt (limited to 'dts/Bindings/clock/samsung,s5pv210-clock.txt') diff --git a/dts/Bindings/clock/samsung,s5pv210-clock.txt b/dts/Bindings/clock/samsung,s5pv210-clock.txt new file mode 100644 index 0000000000..effd9401c1 --- /dev/null +++ b/dts/Bindings/clock/samsung,s5pv210-clock.txt @@ -0,0 +1,78 @@ +* Samsung S5P6442/S5PC110/S5PV210 Clock Controller + +Samsung S5P6442, S5PC110 and S5PV210 SoCs contain integrated clock +controller, which generates and supplies clock to various controllers +within the SoC. + +Required Properties: + +- compatible: should be one of following: + - "samsung,s5pv210-clock" : for clock controller of Samsung + S5PC110/S5PV210 SoCs, + - "samsung,s5p6442-clock" : for clock controller of Samsung + S5P6442 SoC. + +- reg: physical base address of the controller and length of memory mapped + region. + +- #clock-cells: should be 1. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/s5pv210.h header and can be used in device tree sources. + +External clocks: + +There are several clocks that are generated outside the SoC. It is expected +that they are defined using standard clock bindings with following +clock-output-names: + - "xxti": external crystal oscillator connected to XXTI and XXTO pins of +the SoC, + - "xusbxti": external crystal oscillator connected to XUSBXTI and XUSBXTO +pins of the SoC, + +A subset of above clocks available on given board shall be specified in +board device tree, including the system base clock, as selected by XOM[0] +pin of the SoC. Refer to generic fixed rate clock bindings +documentation[1] for more information how to specify these clocks. + +[1] Documentation/devicetree/bindings/clock/fixed-clock.txt + +Example: Clock controller node: + + clock: clock-controller@7e00f000 { + compatible = "samsung,s5pv210-clock"; + reg = <0x7e00f000 0x1000>; + #clock-cells = <1>; + }; + +Example: Required external clocks: + + xxti: clock-xxti { + compatible = "fixed-clock"; + clock-output-names = "xxti"; + clock-frequency = <24000000>; + #clock-cells = <0>; + }; + + xusbxti: clock-xusbxti { + compatible = "fixed-clock"; + clock-output-names = "xusbxti"; + clock-frequency = <24000000>; + #clock-cells = <0>; + }; + +Example: 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" properties): + + uart0: serial@e2900000 { + compatible = "samsung,s5pv210-uart"; + reg = <0xe2900000 0x400>; + interrupt-parent = <&vic1>; + interrupts = <10>; + clock-names = "uart", "clk_uart_baud0", + "clk_uart_baud1"; + clocks = <&clocks UART0>, <&clocks UART0>, + <&clocks SCLK_UART0>; + status = "disabled"; + }; -- cgit v1.2.3