[PATCH 0/3] spi: Support SPI I/O protocol lines

[Jagan Teki <jagan@amarulasolutions.com>]

Some of the SPI controllers have a special set of format
registers that defines how the transfer initiated to the
FIFO by means of I/O protocol lines.
  
Each mode of transfer from slave would be required to configure
the I/O protocol lines so-that the master would identify how
many number I/O protocol lines were used and alter the protocol
bits on the controller.

To address this issue (on these kinds of SPI controllers) this
series is trying to send the I/O protocol lines being used
on particular transfers.

patch 1: Transfer the opcode alone

patch 2: Add SPI I/O protocol lines via spi->proto 

patch 3: Use spi->proto on SiFive SPI controller

Any inputs?
Jagan.

Jagan Teki (3):
  spi: spi-mem: Xfer opcode alone for non spi-mem
  spi: Support SPI I/O protocol lines
  spi: sifive: Fix format register proto field

 drivers/spi/spi-mem.c    | 68 +++++++++++++++++++++++++---------------
 drivers/spi/spi-sifive.c | 11 +++++--
 drivers/spi/spi-uclass.c |  7 +++++
 include/spi.h            |  9 ++++++
 4 files changed, 67 insertions(+), 28 deletions(-)

-- 
2.17.1