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* spi: spi-qcom-qspi: Fix remaining driver nitsRyan Case2018-11-221-4/+4
| | | | | | | | | | | | Address remaining comments from original driver patch series * Move RD_FIFO_CFG to be ordered corretly * Expand spinlock comment Signed-off-by: Ryan Case <ryandcase@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: Introduce new driver for Qualcomm QuadSPI controllerGirish Mahadevan2018-10-111-0/+581
New driver for Qualcomm QuadSPI(QSPI) controller that is used to communicate with slaves such as flash memory devices. The QSPI controller can operate in 2 or 4 wire mode but only supports SPI Mode 0. The controller can also operate in Single or Dual data rate modes. Signed-off-by: Girish Mahadevan <girishm@codeaurora.org> Signed-off-by: Ryan Case <ryandcase@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>