1 Status: Unstable - ABI compatibility may be broken in the future
2
3 Binding for keystone PLLs. The main PLL IP typically has a multiplier,
4 a divider and a post divider. The additional PLL IPs like ARMPLL, DDRPLL
5 and PAPLL are controlled by the memory mapped register where as the Main
6 PLL is controlled by a PLL controller registers along with memory mapped
7 registers.
8
9 This binding uses the common clock binding[1].
10
11 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
12
13 Required properties:
14 - #clock-cells : from common clock binding; shall be set to 0.
15 - compatible : shall be "ti,keystone,main-pll-clock" or "ti,keystone,pll-clock"
16 - clocks : parent clock phandle
17 - reg - pll control0 and pll multipler registers
18 - reg-names : control, multiplier and post-divider. The multiplier and
19 post-divider registers are applicable only for main pll clock
20 - fixed-postdiv : fixed post divider value. If absent, use clkod register bits
21 for postdiv
22
23 Example:
24 mainpllclk: mainpllclk@2310110 {
25 #clock-cells = <0>;
26 compatible = "ti,keystone,main-pll-clock";
27 clocks = <&refclksys>;
28 reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
29 reg-names = "control", "multiplier", "post-divider";
30 fixed-postdiv = <2>;
31 };
32
33 papllclk: papllclk@2620358 {
34 #clock-cells = <0>;
35 compatible = "ti,keystone,pll-clock";
36 clocks = <&refclkpass>;
37 clock-output-names = "pa-pll-clk";
38 reg = <0x02620358 4>;
39 reg-names = "control";
40 };
41
42 Required properties:
43 - #clock-cells : from common clock binding; shall be set to 0.
44 - compatible : shall be "ti,keystone,pll-mux-clock"
45 - clocks : link phandles of parent clocks
46 - reg - pll mux register
47 - bit-shift : number of bits to shift the bit-mask
48 - bit-mask : arbitrary bitmask for programming the mux
49
50 Optional properties:
51 - clock-output-names : From common clock binding.
52
53 Example:
54 mainmuxclk: mainmuxclk@2310108 {
55 #clock-cells = <0>;
56 compatible = "ti,keystone,pll-mux-clock";
57 clocks = <&mainpllclk>, <&refclkmain>;
58 reg = <0x02310108 4>;
59 bit-shift = <23>;
60 bit-mask = <1>;
61 clock-output-names = "mainmuxclk";
62 };
63
64 Required properties:
65 - #clock-cells : from common clock binding; shall be set to 0.
66 - compatible : shall be "ti,keystone,pll-divider-clock"
67 - clocks : parent clock phandle
68 - reg - pll mux register
69 - bit-shift : number of bits to shift the bit-mask
70 - bit-mask : arbitrary bitmask for programming the divider
71
72 Optional properties:
73 - clock-output-names : From common clock binding.
74
75 Example:
76 gemtraceclk: gemtraceclk@2310120 {
77 #clock-cells = <0>;
78 compatible = "ti,keystone,pll-divider-clock";
79 clocks = <&mainmuxclk>;
80 reg = <0x02310120 4>;
81 bit-shift = <0>;
82 bit-mask = <8>;
83 clock-output-names = "gemtraceclk";
84 };
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