1 * Renesas RZ/A1 Clock Pulse Generator (CPG)
3 The CPG generates core clocks for the RZ/A1 SoCs. It includes the PLL, variable
4 CPU and GPU clocks, and 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.
10 - compatible: Must be one of
11 - "renesas,r7s72100-cpg-clocks" for the r7s72100 CPG
12 and "renesas,rz-cpg-clocks" as a fallback.
13 - reg: Base address and length of the memory resource used by the CPG
14 - clocks: References to possible parent clocks. Order must match clock modes
15 in the datasheet. For the r7s72100, this is extal, usb_x1.
16 - #clock-cells: Must be 1
17 - clock-output-names: The names of the clocks. Supported clocks are "pll",
19 - #power-domain-cells: Must be 0
21 SoC devices that are part of the CPG/MSTP Clock Domain and can be power-managed
22 through an MSTP clock should refer to the CPG device node in their
23 "power-domains" property, as documented by the generic PM domain bindings in
24 Documentation/devicetree/bindings/power/power_domain.txt.
32 cpg_clocks: cpg_clocks@fcfe0000 {
34 compatible = "renesas,r7s72100-cpg-clocks",
35 "renesas,rz-cpg-clocks";
36 reg = <0xfcfe0000 0x18>;
37 clocks = <&extal_clk>, <&usb_x1_clk>;
38 clock-output-names = "pll", "i", "g";
39 #power-domain-cells = <0>;
43 - CPG/MSTP Clock Domain member device node:
45 mtu2: timer@fcff0000 {
46 compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
47 reg = <0xfcff0000 0x400>;
48 interrupts = <0 107 IRQ_TYPE_LEVEL_HIGH>;
49 interrupt-names = "tgi0a";
50 clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
52 power-domains = <&cpg_clocks>;