Kernel-4.18.0-80.el8_sunxi-ccu

Allwinner Clock Control Unit Binding

Required properties :

• compatible: must contain one of the following compatibles:

    - "allwinner,sun4i-a10-ccu"
    - "allwinner,sun5i-a10s-ccu"
    - "allwinner,sun5i-a13-ccu"
    - "allwinner,sun6i-a31-ccu"
    - "allwinner,sun7i-a20-ccu"
    - "allwinner,sun8i-a23-ccu"
    - "allwinner,sun8i-a33-ccu"
    - "allwinner,sun8i-a83t-ccu"
    - "allwinner,sun8i-a83t-r-ccu"
    - "allwinner,sun8i-h3-ccu"
    - "allwinner,sun8i-h3-r-ccu"
  

•  - "allwinner,sun8i-r40-ccu"
    - "allwinner,sun8i-v3s-ccu"
    - "allwinner,sun9i-a80-ccu"
    - "allwinner,sun50i-a64-ccu"
    - "allwinner,sun50i-a64-r-ccu"
    - "allwinner,sun50i-h5-ccu"
    - "allwinner,sun50i-h6-ccu"
    - "allwinner,sun50i-h6-r-ccu"
    - "nextthing,gr8-ccu"
  

• reg: Must contain the registers base address and length
• clocks: phandle to the oscillators feeding the CCU. Two are needed:
  • “hosc”: the high frequency oscillator (usually at 24MHz)
  • “losc”: the low frequency oscillator (usually at 32kHz)

    On the A83T, this is the internal 16MHz oscillator divided by 512
    

• clock-names: Must contain the clock names described just above
• #clock-cells : must contain 1
• #reset-cells : must contain 1

For the main CCU on H6, one more clock is needed:

• “iosc”: the SoC’s internal frequency oscillator

For the PRCM CCUs on A83T/H3/A64/H6, two more clocks are needed:

• “pll-periph”: the SoC’s peripheral PLL from the main CCU
• “iosc”: the SoC’s internal frequency oscillator

Example for generic CCU:
ccu: clock@1c20000 {
compatible = “allwinner,sun8i-h3-ccu”;
reg = <0x01c20000 0x400>;
clocks = <&osc24M>, <&osc32k>;
clock-names = “hosc”, “losc”;
#clock-cells = <1>;
#reset-cells = <1>;
};

Example for PRCM CCU:
r_ccu: clock@1f01400 {
compatible = “allwinner,sun50i-a64-r-ccu”;
reg = <0x01f01400 0x100>;
clocks = <&osc24M>, <&osc32k>, <&iosc>, <&ccu CLK_PLL_PERIPH0>;
clock-names = “hosc”, “losc”, “iosc”, “pll-periph”;
#clock-cells = <1>;
#reset-cells = <1>;
};