tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1* Allwinner PRCM (Power/Reset/Clock Management) Multi-Functional Device
2
3PRCM is an MFD device exposing several Power Management related devices
4(like clks and reset controllers).
5
6Required properties:
7 - compatible: "allwinner,sun6i-a31-prcm" or "allwinner,sun8i-a23-prcm"
8 - reg: The PRCM registers range
9
10The prcm node may contain several subdevices definitions:
11 - see Documentation/devicetree/clk/sunxi.txt for clock devices
12 - see Documentation/devicetree/reset/allwinner,sunxi-clock-reset.txt for reset
13 controller devices
14
15
16Example:
17
18 prcm: prcm@01f01400 {
19 compatible = "allwinner,sun6i-a31-prcm";
20 reg = <0x01f01400 0x200>;
21
22 /* Put subdevices here */
23 ar100: ar100_clk {
24 compatible = "allwinner,sun6i-a31-ar100-clk";
25 #clock-cells = <0>;
26 clocks = <&osc32k>, <&osc24M>, <&pll6>, <&pll6>;
27 };
28
29 ahb0: ahb0_clk {
30 compatible = "fixed-factor-clock";
31 #clock-cells = <0>;
32 clock-div = <1>;
33 clock-mult = <1>;
34 clocks = <&ar100_div>;
35 clock-output-names = "ahb0";
36 };
37
38 apb0: apb0_clk {
39 compatible = "allwinner,sun6i-a31-apb0-clk";
40 #clock-cells = <0>;
41 clocks = <&ahb0>;
42 clock-output-names = "apb0";
43 };
44
45 apb0_gates: apb0_gates_clk {
46 compatible = "allwinner,sun6i-a31-apb0-gates-clk";
47 #clock-cells = <1>;
48 clocks = <&apb0>;
49 clock-output-names = "apb0_pio", "apb0_ir",
50 "apb0_timer01", "apb0_p2wi",
51 "apb0_uart", "apb0_1wire",
52 "apb0_i2c";
53 };
54
55 apb0_rst: apb0_rst {
56 compatible = "allwinner,sun6i-a31-clock-reset";
57 #reset-cells = <1>;
58 };
59 };