Hi,
I have an 8GB eMMC and I intend to configure user enhance data area for this.
When I query the enhanced data area related attributes using mmc tool, I get the following:
Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x0001d2
i.e. 3817472 KiB
Enhanced User Data Area Size [ENH_SIZE_MULT]: 0x0000e9
i.e. 1908736 KiB
Enhanced User Data Start Address [ENH_START_ADDR]: 0x000000
i.e. 0 bytes offset
My questions:
a) Is it important to configure the eMMC to the max enhanced area size (in this case 0x1d2) only? Can we not use the max value and instead use a setting like 0xe9 as it is configured here? what is the impact of using 0xe9 instead of 0x1d2?
b) Configuring it to 0xe9, does it ensure the eMMC is in pseudo SLC mode?
c) When I query the available size using fdisk -l command, I see the available eMMC size as 5.5 GB. I was expecting that the enhanced user data area size (in this case 1.9GB) would be the available size but it is not. How is the available size determined for the eMMC in this case?
Regards