'How this compatible = "cache" is useful

I am looking at the one of the device tree file, and confuses with where this compatible string is used, and where is the driver for it.

for instance:

        cluster_a57_l2: l2-cache0 {
            compatible = "cache";
            cache-size = <0x200000>;
            cache-line-size = <64>;
            cache-sets = <2048>;
        };

https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/exynos/exynos5433.dtsi#L228

Who is the user of this node in Linux Kernel?

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'How this compatible = "cache" is useful

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