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[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / clock / sunxi-ccu.txt
1 Allwinner Clock Control Unit Binding
2 ------------------------------------
3
4 Required properties :
5 - compatible: must contain one of the following compatibles:
6                 - "allwinner,sun6i-a31-ccu"
7                 - "allwinner,sun8i-a23-ccu"
8                 - "allwinner,sun8i-a33-ccu"
9                 - "allwinner,sun8i-h3-ccu"
10                 - "allwinner,sun8i-v3s-ccu"
11                 - "allwinner,sun9i-a80-ccu"
12                 - "allwinner,sun50i-a64-ccu"
13
14 - reg: Must contain the registers base address and length
15 - clocks: phandle to the oscillators feeding the CCU. Two are needed:
16   - "hosc": the high frequency oscillator (usually at 24MHz)
17   - "losc": the low frequency oscillator (usually at 32kHz)
18 - clock-names: Must contain the clock names described just above
19 - #clock-cells : must contain 1
20 - #reset-cells : must contain 1
21
22 Example:
23 ccu: clock@01c20000 {
24         compatible = "allwinner,sun8i-h3-ccu";
25         reg = <0x01c20000 0x400>;
26         clocks = <&osc24M>, <&osc32k>;
27         clock-names = "hosc", "losc";
28         #clock-cells = <1>;
29         #reset-cells = <1>;
30 };