mirror of https://gitee.com/openkylin/linux.git
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
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: The external oscillator clock phandle
|
|
|
|
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>;
|
|
};
|