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-rw-r--r--drivers/spi/spi-orion.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index 6b001c4a5640..be2e87ee8b31 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -39,6 +39,8 @@
#define ORION_SPI_IF_CTRL_REG 0x00
#define ORION_SPI_IF_CONFIG_REG 0x04
+#define ORION_SPI_IF_RXLSBF BIT(14)
+#define ORION_SPI_IF_TXLSBF BIT(13)
#define ORION_SPI_DATA_OUT_REG 0x08
#define ORION_SPI_DATA_IN_REG 0x0c
#define ORION_SPI_INT_CAUSE_REG 0x10
@@ -234,6 +236,11 @@ orion_spi_mode_set(struct spi_device *spi)
reg |= ORION_SPI_MODE_CPOL;
if (spi->mode & SPI_CPHA)
reg |= ORION_SPI_MODE_CPHA;
+ if (spi->mode & SPI_LSB_FIRST)
+ reg |= ORION_SPI_IF_RXLSBF | ORION_SPI_IF_TXLSBF;
+ else
+ reg &= ~(ORION_SPI_IF_RXLSBF | ORION_SPI_IF_TXLSBF);
+
writel(reg, spi_reg(orion_spi, ORION_SPI_IF_CONFIG_REG));
}
@@ -591,8 +598,8 @@ static int orion_spi_probe(struct platform_device *pdev)
master->bus_num = cell_index;
}
- /* we support only mode 0, and no options */
- master->mode_bits = SPI_CPHA | SPI_CPOL;
+ /* we support all 4 SPI modes and LSB first option */
+ master->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST;
master->set_cs = orion_spi_set_cs;
master->transfer_one = orion_spi_transfer_one;
master->num_chipselect = ORION_NUM_CHIPSELECTS;