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authorDavid Mosberger <davidm@egauge.net>2014-05-06 00:46:18 +0530
committerTom Rini <trini@ti.com>2014-06-06 17:46:05 -0400
commit6e1899e633c2ac3f6da7101d4990361c6ff2a9d2 (patch)
tree705be533d6618bf18017295df3fd18a45329b71e /lib
parent27ce9e4290b168a1241699d411678959aaf9649b (diff)
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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 'lib')
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