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How to improve spi speed in u-boot?

Category: Software
Product Number: ADSP-SC573
Software Version: release/yocto-2.1.0

Hi everyone,

I am working with SC573-EZKIT and find out spi read speed slower than configured in u-boot.

From scoping I found SPI clock is right and there is a fixed overhead per byte.

I want to use MMP or DMA method to reduce the overhead.

Does anyone know how to easy enable DMA or MMP in u-boot release/yocto-2.1.0?

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