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1Broadcom BCM2835 CPRMAN clocks
2
3This binding uses the common clock binding:
4 Documentation/devicetree/bindings/clock/clock-bindings.txt
5
6The CPRMAN clock controller generates clocks in the audio power domain
7of the BCM2835. There is a level of PLLs deriving from an external
8oscillator, a level of PLL dividers that produce channels off of the
9few PLLs, and a level of mostly-generic clock generators sourcing from
10the PLL channels. Most other hardware components source from the
11clock generators, but a few (like the ARM or HDMI) will source from
12the PLL dividers directly.
13
14Required properties:
15- compatible: Should be "brcm,bcm2835-cprman"
16- #clock-cells: Should be <1>. The permitted clock-specifier values can be
17 found in include/dt-bindings/clock/bcm2835.h
18- reg: Specifies base physical address and size of the registers
19- clocks: phandles to the parent clocks used as input to the module, in
20 the following order:
21
22 - External oscillator
23 - DSI0 byte clock
24 - DSI0 DDR2 clock
25 - DSI0 DDR clock
26 - DSI1 byte clock
27 - DSI1 DDR2 clock
28 - DSI1 DDR clock
29
30 Only external oscillator is required. The DSI clocks may
31 not be present, in which case their children will be
32 unusable.
33
34Example:
35
36 clk_osc: clock@3 {
37 compatible = "fixed-clock";
38 reg = <3>;
39 #clock-cells = <0>;
40 clock-output-names = "osc";
41 clock-frequency = <19200000>;
42 };
43
44 clocks: cprman@7e101000 {
45 compatible = "brcm,bcm2835-cprman";
46 #clock-cells = <1>;
47 reg = <0x7e101000 0x2000>;
48 clocks = <&clk_osc>;
49 };
50
51 i2c0: i2c@7e205000 {
52 compatible = "brcm,bcm2835-i2c";
53 reg = <0x7e205000 0x1000>;
54 interrupts = <2 21>;
55 clocks = <&clocks BCM2835_CLOCK_VPU>;
56 #address-cells = <1>;
57 #size-cells = <0>;
58 };