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mmc: fix erase_grp_size computation with high-capacity size definition

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The erase_grp_size in struct mmc is to be a size in 512-byte sectors
but the code used to compute it for eMMC when EXT_CSD_ERASE_GROUP_DEF is
enabled computed it as bytes, leading to erase sizes and alignment
much larger than what is actually required by the mmc device.

Signed-off-by: Diego Santa Cruz <Diego.SantaCruz@spinetix.com>
This commit is contained in:
Diego Santa Cruz 2014-12-23 10:50:24 +01:00 • committed by Pantelis Antoniou
parent beb98a1496
commit a4ff9f83f5
2 changed files with 2 additions and 3 deletions
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3
drivers/mmc/mmc.c
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@ -1068,8 +1068,7 @@ static int mmc_startup(struct mmc *mmc)
/* Read out group size from ext_csd */
mmc->erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
MMC_MAX_BLOCK_LEN * 1024;
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
/*
* if high capacity and partition setting completed
* SEC_COUNT is valid even if it is smaller than 2 GiB

2
include/mmc.h
View file

@ -315,7 +315,7 @@ struct mmc {
uint tran_speed;
uint read_bl_len;
uint write_bl_len;
uint erase_grp_size;
uint erase_grp_size; /* in 512-byte sectors */
u64 capacity;
u64 capacity_user;
u64 capacity_boot;