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author | David Mosberger <davidm@egauge.net> | 2014-05-06 00:46:18 +0530 |
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committer | Tom Rini <trini@ti.com> | 2014-06-06 17:46:05 -0400 |
commit | 6e1899e633c2ac3f6da7101d4990361c6ff2a9d2 (patch) | |
tree | 705be533d6618bf18017295df3fd18a45329b71e /include/linux/mtd/fsmc_nand.h | |
parent | 27ce9e4290b168a1241699d411678959aaf9649b (diff) | |
download | u-boot-imx-6e1899e633c2ac3f6da7101d4990361c6ff2a9d2.zip u-boot-imx-6e1899e633c2ac3f6da7101d4990361c6ff2a9d2.tar.gz u-boot-imx-6e1899e633c2ac3f6da7101d4990361c6ff2a9d2.tar.bz2 |
mtd: nand: fix GET/SET_FEATURES address on 16-bit devices
As per following Sections in ONFI Spec, GET_FEATURES and SET_FEATURES also need
byte-addressing on 16-bit devices.
*Section: Target Initialization"
"The Read ID and Read Parameter Page commands only use the lower 8-bits of the
data bus. The host shall not issue commands that use a word data width on x16
devices until the host determines the device supports a 16-bit data bus width
in the parameter page."
*Section: Bus Width Requirements*
"When the host supports a 16-bit bus width, only data is transferred at the
16-bit width. All address and command line transfers shall use only the lower
8-bits of the data bus. During command transfers, the host may place any value
on the upper 8-bits of the data bus. During address transfers, the host shall
set the upper 8-bits of the data bus to 00h."
So porting following commit from linux kernel
commit e34fcb07a6d57411de6e15a47724fbe92c5caa42
Author: David Mosberger <davidm@egauge.net> (preserving authorship)
mtd: nand: fix GET/SET_FEATURES address on 16-bit devices
Signed-off-by: Pekon Gupta <pekon@ti.com>
Diffstat (limited to 'include/linux/mtd/fsmc_nand.h')
0 files changed, 0 insertions, 0 deletions