Hardware supports LSB_FIRST mode. Support it also in the driver.
Signed-off-by: Ricardo Ribalda Delgado <[email protected]>
---
drivers/spi/spi-xilinx.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index 2ea4ca5..b8ce58d 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -34,7 +34,8 @@
#define XSPI_CR_MASTER_MODE 0x04
#define XSPI_CR_CPOL 0x08
#define XSPI_CR_CPHA 0x10
-#define XSPI_CR_MODE_MASK (XSPI_CR_CPHA | XSPI_CR_CPOL)
+#define XSPI_CR_MODE_MASK (XSPI_CR_CPHA | XSPI_CR_CPOL | \
+ XSPI_CR_LSB_FIRST)
#define XSPI_CR_TXFIFO_RESET 0x20
#define XSPI_CR_RXFIFO_RESET 0x40
#define XSPI_CR_MANUAL_SSELECT 0x80
@@ -194,6 +195,8 @@ static void xilinx_spi_chipselect(struct spi_device *spi,
int is_on)
cr |= XSPI_CR_CPHA;
if (spi->mode & SPI_CPOL)
cr |= XSPI_CR_CPOL;
+ if (spi->mode & SPI_LSB_FIRST)
+ cr |= XSPI_CR_LSB_FIRST;
xspi->write_fn(cr, xspi->regs + XSPI_CR_OFFSET);
/* We do not check spi->max_speed_hz here as the SPI clock
--
2.1.4
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