2e08e4d2ff
The Allwinner H6 main CCU uses the internal oscillator of the SoC, which is different with old SoCs' main CCU. Add device tree binding for the Allwinner H6 main CCU. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
61 lines
1.9 KiB
Plaintext
61 lines
1.9 KiB
Plaintext
Allwinner Clock Control Unit Binding
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Required properties :
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- compatible: must contain one of the following compatibles:
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- "allwinner,sun4i-a10-ccu"
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- "allwinner,sun5i-a10s-ccu"
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- "allwinner,sun5i-a13-ccu"
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- "allwinner,sun6i-a31-ccu"
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- "allwinner,sun7i-a20-ccu"
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- "allwinner,sun8i-a23-ccu"
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- "allwinner,sun8i-a33-ccu"
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- "allwinner,sun8i-a83t-ccu"
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- "allwinner,sun8i-a83t-r-ccu"
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- "allwinner,sun8i-h3-ccu"
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- "allwinner,sun8i-h3-r-ccu"
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+ - "allwinner,sun8i-r40-ccu"
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- "allwinner,sun8i-v3s-ccu"
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- "allwinner,sun9i-a80-ccu"
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- "allwinner,sun50i-a64-ccu"
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- "allwinner,sun50i-a64-r-ccu"
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- "allwinner,sun50i-h5-ccu"
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- "allwinner,sun50i-h6-ccu"
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- "nextthing,gr8-ccu"
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- reg: Must contain the registers base address and length
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- clocks: phandle to the oscillators feeding the CCU. Two are needed:
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- "hosc": the high frequency oscillator (usually at 24MHz)
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- "losc": the low frequency oscillator (usually at 32kHz)
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On the A83T, this is the internal 16MHz oscillator divided by 512
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- clock-names: Must contain the clock names described just above
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- #clock-cells : must contain 1
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- #reset-cells : must contain 1
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For the main CCU on H6, one more clock is needed:
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- "iosc": the SoC's internal frequency oscillator
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For the PRCM CCUs on A83T/H3/A64, two more clocks are needed:
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- "pll-periph": the SoC's peripheral PLL from the main CCU
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- "iosc": the SoC's internal frequency oscillator
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Example for generic CCU:
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ccu: clock@1c20000 {
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compatible = "allwinner,sun8i-h3-ccu";
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reg = <0x01c20000 0x400>;
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clocks = <&osc24M>, <&osc32k>;
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clock-names = "hosc", "losc";
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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Example for PRCM CCU:
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r_ccu: clock@1f01400 {
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compatible = "allwinner,sun50i-a64-r-ccu";
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reg = <0x01f01400 0x100>;
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clocks = <&osc24M>, <&osc32k>, <&iosc>, <&ccu CLK_PLL_PERIPH0>;
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clock-names = "hosc", "losc", "iosc", "pll-periph";
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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