About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / clock / renesas,r8a7779-cpg-clocks.txt




Custom Search

Based on kernel version 4.3. Page generated on 2015-11-02 12:44 EST.

1	* Renesas R8A7779 Clock Pulse Generator (CPG)
2	
3	The CPG generates core clocks for the R8A7779. It includes one PLL and
4	several fixed ratio dividers.
5	The CPG also provides a Clock Domain for SoC devices, in combination with the
6	CPG Module Stop (MSTP) Clocks.
7	
8	Required Properties:
9	
10	  - compatible: Must be "renesas,r8a7779-cpg-clocks"
11	  - reg: Base address and length of the memory resource used by the CPG
12	
13	  - clocks: Reference to the parent clock
14	  - #clock-cells: Must be 1
15	  - clock-output-names: The names of the clocks. Supported clocks are "plla",
16	    "z", "zs", "s", "s1", "p", "b", "out".
17	  - #power-domain-cells: Must be 0
18	
19	SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed
20	through an MSTP clock should refer to the CPG device node in their
21	"power-domains" property, as documented by the generic PM domain bindings in
22	Documentation/devicetree/bindings/power/power_domain.txt.
23	
24	
25	Examples
26	--------
27	
28	  - CPG device node:
29	
30		cpg_clocks: cpg_clocks@ffc80000 {
31			compatible = "renesas,r8a7779-cpg-clocks";
32			reg = <0xffc80000 0x30>;
33			clocks = <&extal_clk>;
34			#clock-cells = <1>;
35			clock-output-names = "plla", "z", "zs", "s", "s1", "p",
36			                     "b", "out";
37			#power-domain-cells = <0>;
38		};
39	
40	
41	  - CPG/MSTP Clock Domain member device node:
42	
43		sata: sata@fc600000 {
44			compatible = "renesas,sata-r8a7779", "renesas,rcar-sata";
45			reg = <0xfc600000 0x2000>;
46			interrupts = <0 100 IRQ_TYPE_LEVEL_HIGH>;
47			clocks = <&mstp1_clks R8A7779_CLK_SATA>;
48			power-domains = <&cpg_clocks>;
49		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.