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Broadcom BCM2835 CPRMAN clocks
This binding uses the common clock binding:
Documentation/devicetree/bindings/clock/clock-bindings.txt
The CPRMAN clock controller generates clocks in the audio power domain
of the BCM2835. There is a level of PLLs deriving from an external
oscillator, a level of PLL dividers that produce channels off of the
few PLLs, and a level of mostly-generic clock generators sourcing from
the PLL channels. Most other hardware components source from the
clock generators, but a few (like the ARM or HDMI) will source from
the PLL dividers directly.
Required properties:
- compatible: Should be "brcm,bcm2835-cprman"
- #clock-cells: Should be <1>. The permitted clock-specifier values can be
found in include/dt-bindings/clock/bcm2835.h
- reg: Specifies base physical address and size of the registers
- clocks: phandles to the parent clocks used as input to the module, in
the following order:
- External oscillator
- DSI0 byte clock
- DSI0 DDR2 clock
- DSI0 DDR clock
- DSI1 byte clock
- DSI1 DDR2 clock
- DSI1 DDR clock
Only external oscillator is required. The DSI clocks may
not be present, in which case their children will be
unusable.
Example:
clk_osc: clock@3 {
compatible = "fixed-clock";
reg = <3>;
#clock-cells = <0>;
clock-output-names = "osc";
clock-frequency = <19200000>;
};
clocks: cprman@7e101000 {
compatible = "brcm,bcm2835-cprman";
#clock-cells = <1>;
reg = <0x7e101000 0x2000>;
clocks = <&clk_osc>;
};
i2c0: i2c@7e205000 {
compatible = "brcm,bcm2835-i2c";
reg = <0x7e205000 0x1000>;
interrupts = <2 21>;
clocks = <&clocks BCM2835_CLOCK_VPU>;
#address-cells = <1>;
#size-cells = <0>;
};
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