"raw_rpmb_size_mult" is a mutliple of 128kB block.
RPMB size in byte is calculated by using the following equation:
RPMB partition size = 128kB x raw_rpmb_size_mult
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-SD/MMC/SDIO Clock Gating Attribute
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-Read and write access is provided to following attribute.
-This attribute appears only if CONFIG_MMC_CLKGATE is enabled.
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- clkgate_delay Tune the clock gating delay with desired value in milliseconds.
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-echo <desired delay> > /sys/class/mmc_host/mmcX/clkgate_delay