spi-3wire is used when SI/SO signals shared so get
the same from dts node and assign to mode on slave
plat->mode.

Cc: Simon Glass <s...@chromium.org>
Signed-off-by: Jagan Teki <jt...@openedev.com>
---
 drivers/spi/spi-uclass.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index 3c7d64a..e0f6b25 100644
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -378,6 +378,8 @@ int spi_slave_ofdata_to_platdata(const void *blob, int node,
                mode |= SPI_CPHA;
        if (fdtdec_get_bool(blob, node, "spi-cs-high"))
                mode |= SPI_CS_HIGH;
+       if (fdtdec_get_bool(blob, node, "spi-3wire"))
+               mode |= SPI_3WIRE;
        if (fdtdec_get_bool(blob, node, "spi-half-duplex"))
                mode |= SPI_PREAMBLE;
        plat->mode = mode;
-- 
1.9.1

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