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Marvell CN20K SoCs integrate a DDR Performance Monitoring Unit (PMU) associated with the DDR controller. The block provides hardware counters to monitor DDR traffic and performance events and is accessed via a dedicated MMIO region. The CN20K DDR PMU is functionally equivalent to the CN10K DDR PMU, with minor register offset differences. Signed-off-by: Geetha sowjanya <[email protected]> Reviewed-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Will Deacon <[email protected]>