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authorBenoît Thébaudeau <benoit.thebaudeau@advansee.com>2012-08-08 03:55:32 +0000
committerStefano Babic <sbabic@denx.de>2012-09-23 19:57:13 +0200
commit5527024fdb10798d2975197f287457b29e2d4084 (patch)
tree2255a6b8aab740717826f9b28462fdb8baa82529 /README
parent362635bd50e386770ebaa2d5d090eb8cbf96430b (diff)
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KARO TX25: Fix NAND Flash R/W cycle times
The NAND Flash of the KARO TX25 board is a Samsung K9F1G08U0B with 25-ns R/W cycle times. However, the NFC clock for this board was set to 66.5 MHz, so using the NFC driver in symmetric mode (i.e. 1 NFC clock cycle = 1 NF R/W cycle) resulted in NF R/W cycle times of 15 ns, hence corrupted NF accesses. This patch fixes this issue by setting the NFC clock to the highest frequency complying to the 25-ns NF R/W cycle times specification, i.e. 33.25 MHz. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: John Rigby <jcrigby@gmail.com> Cc: Scott Wood <scottwood@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Daniel Gachet <Daniel.Gachet@hefr.ch> Acked-by: Stefano Babic <sbabic@denx.de>
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