GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

mmc: Resolve BKOPS compatability issue

Browse source 
This patch is coming to fix compatibility issue of BKOPS_EN  field of EXT_CSD.
In eMMC-5.1, BKOPS_EN was changed, and now it has two operational bits:
Bit 0 - MANUAL_EN
Bit 1 - AUTO_EN
In previous eMMC revisions, only Bit 0 was supported.

Signed-off-by: Alexey Skidanov <alexey.skidanov@sandisk.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Alexey Skidanov 2015-01-29 10:49:43 +02:00 • committed by Ulf Hansson
parent 14460dbaf7
commit 0501be6429
4 changed files with 12 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/mmc/card.h
View file

@ -83,7 +83,7 @@ struct mmc_ext_csd {
bool hpi; /* HPI support bit */
unsigned int hpi_cmd; /* cmd used as HPI */
bool bkops; /* background support bit */
bool bkops_en; /* background enable bit */
bool man_bkops_en; /* manual bkops enable bit */
unsigned int data_sector_size; /* 512 bytes or 4KB */
unsigned int data_tag_unit_size; /* DATA TAG UNIT size */
unsigned int boot_ro_lock; /* ro lock support */

5
include/linux/mmc/mmc.h
View file

@ -427,6 +427,11 @@ struct _mmc_csd {
*/
#define EXT_CSD_BKOPS_LEVEL_2 0x2
/*
* BKOPS modes
*/
#define EXT_CSD_MANUAL_BKOPS_MASK 0x01
/*
* MMC_SWITCH access modes
*/