tree 21fa94a1c427ca3c95a0557b0af928301bbbf665
parent 79567c1a321e7396e734135d56950311dde07db2
author Sowjanya Komatineni <skomatineni@nvidia.com> 1554423247 -0700
committer Mark Brown <broonie@kernel.org> 1554707518 +0700
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlyq9D4THGJyb29uaWVA
 a2VybmVsLm9yZwAKCRAk1otyXVSH0PfLB/9QEQpqhg5wvbaGKM8FFDE8ZRV+BV5s
 DBes9DxiCfiJv1WysYBSq2GW+iMJSrYMDHE9MFiOJqVM1RnHZ9AgnBkgK5qr1S0s
 v13Sh4177WgQ+LL3ZHYLwfJ7T/g6dE2vWKB7iZYOdcM/xze+ng4MZZDvpa2FrfV/
 y1tuzdOkn5htnlRvcEf1r6YCMKW9n+sV6k5RdkQ+OtTJvdFR2CUm0gQt+GzUZ/xR
 Bg8ANrfXi6qHVuPsVB4Rx9G63UjU2BuqPxmzXl8YMEwNUPrDiDbdMbXif2l4N9bI
 cYQ2/keyFh5Dk6z7Cb2BDvxCzXpYkXM61gP2b2d1mwoBFJ0vqUfsaUNZ
 =Fcbh
 -----END PGP SIGNATURE-----

spi: tegra114: add dual mode support

This patch adds support for dual mode SPI transfer.

Dual mode uses both MOSI and MISO lines in parallel where the data
is interleaved on MOSI and MISO lines increasing the throughput.

Packet from Tx FIFO is transmitted on both MOSI and MISO lines and
packet to Rx FIFO is received from both MOSI and MISO lines. Even
bits are transmitted or received on the MOSI data line and odd bits
are transmitted or received on the MISO data line.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>