Hello,
We would like to ask about uses eMMC in pSLC mode with LS1012ARDB. We want to try to set up pSLC.
However, once we set it, we can not reverse it, so please let us ask the procedure.
Our LS1012ARDB's eMMC is as follows. ----------------- => mmc dev 1 switch to partitions #0, OK mmc1(part 0) is current device => mmc info Device: FSL_SDHC Manufacturer ID: fe OEM: 14e Name: P1XXX Tran Speed: 52000000 Rd Block Len: 512 MMC version 4.5 High Capacity: Yes Capacity: 3.6 GiB Bus Width: 4-bit Erase Group Size: 512 KiB HC WP Group Size: 4 MiB User Capacity: 3.6 GiB Boot Capacity: 2 MiB ENH RPMB Capacity: 128 KiB ENH -----------------
From the above information, we think that the area of RPMB and Boot is
pSLC(Enhanced mode). We want to use "User Capacity" (3.6 GiB), as pSLC(Enhanced mode).
----------------- => help mmc mmc - MMC sub system
Usage: mmc info - display info of the current MMC device mmc read addr blk# cnt mmc write addr blk# cnt mmc erase blk# cnt mmc rescan mmc part - lists available partition on current mmc device mmc dev [dev] [part] - show or set current mmc device [partition] mmc list - lists available devices mmc hwpartition [args...] - does hardware partitioning arguments (sizes in 512-byte blocks): [user [enh start cnt] [wrrel {on|off}]] - sets user data area attributes [gp1|gp2|gp3|gp4 cnt [enh] [wrrel {on|off}]] - general purpose partition [check|set|complete] - mode, complete set partitioning completed WARNING: Partitioning is a write-once setting once it is set to complete. Power cycling is required to initialize partitions after set to complete. mmc setdsr <value> - set DSR register value -----------------
From the explanation of help above, we guess that all "User Capacity" can be
set as pSLC by the following command setting.
mmc hwpartition set user enh 0x0 0x733333 wrrel on complete
We guess "0x733333" to specify the whole area, but this may not be correct. ( 0x733333 = 3.6 x 1024 x 1024 x 1024 / 512 ) Because it is not divisible by 512.
Could you advise how to specify the whole area of "User Capacity"?
Best Regards,
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