Kernel-4.18.0-80.el8_brcm,bcm2835-cprman

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>;
};