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[0/2] spi: fsl-lpspi: Option to prevent FIFO under/overrun

Message ID 20180925203701.13605-1-dangtranhieu2012@gmail.com (mailing list archive)
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Series spi: fsl-lpspi: Option to prevent FIFO under/overrun | expand

Message

Hieu Tran Dang Sept. 25, 2018, 8:36 p.m. UTC 
Certain devices don't work well when a transmit FIFO underrun or
receive FIFO overrun occurs. Example is the SAF400x radio chip when
running at high speed which leads to garbage being sent to/received from
the chip. In which case, it should stall waiting for further data to be
available before proceeding. This patch add option to configure the SPI
controller to allow stalling (unset NOSTALL bit in CFGR1).

Hieu Tran Dang (2):
  dt-bindings: spi: fsl-lpspi: Option to allow stalling
  spi: fsl-lpspi: Option to prevent FIFO under/overrun

 .../devicetree/bindings/spi/spi-fsl-lpspi.txt          |  2 ++
 drivers/spi/spi-fsl-lpspi.c                            | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)