spi: spi-fsl-dspi: add SPI_LSB_FIRST to driver capabilities

The driver as well as the controller support the SPI lsb first
mode. However, it's not possible to configure it e.g. when using
spidev. Adding this flag to mode_bits resolves the issue and lsb first
mode can be used.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index f652f70cb8db1652d5075e16f5b12fc5452362cc..02d3ed7f25581af85c706710c2b0bd2e95ad2318 100644 (file)
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -980,7 +980,7 @@ static int dspi_probe(struct platform_device *pdev)
        master->dev.of_node = pdev->dev.of_node;
 
        master->cleanup = dspi_cleanup;
-       master->mode_bits = SPI_CPOL | SPI_CPHA;
+       master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST;
        master->bits_per_word_mask = SPI_BPW_MASK(4) | SPI_BPW_MASK(8) |
                                        SPI_BPW_MASK(16);