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authorGrazvydas Ignotas <notasas@gmail.com>2012-03-16 14:49:54 +0200
committerPaul Walmsley <paul@pwsan.com>2012-04-04 08:32:04 -0600
commit26c547fd130aae7480523a3af3f1df2ef1144743 (patch)
tree1464aa01c8c08d7bfebf83d0bbf8e8a93961deee /arch/arm/plat-omap
parentdd775ae2549217d3ae09363e3edb305d0fa19928 (diff)
ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
If transceiver is attached to a MMC host of ES2.1 OMAP35xx, it seems 2.1.1.128 erratum doesn't apply and there is no data corruption, probably because of different signal timing. The workaround for this erratum disables multiblock reads, which causes dramatic loss of performance (over 75% slower), so avoid it when transceiver is present. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> [paul@pwsan.com: edited commit message slightly] Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm/plat-omap')
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