From: Emil Renner Berthing <kernel@xxxxxxxx> Add missing support for lsb-first mode. Signed-off-by: Emil Renner Berthing <kernel@xxxxxxxx> --- drivers/spi/spi-rockchip.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 9e47e81553a1..3912526ead66 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -476,6 +476,8 @@ static void rockchip_spi_config(struct rockchip_spi *rs, cr0 |= rs->rsd << CR0_RSD_OFFSET; cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET; + if (spi->mode & SPI_LSB_FIRST) + cr0 |= CR0_FBM_LSB << CR0_FBM_OFFSET; if (xfer->rx_buf && xfer->tx_buf) cr0 |= CR0_XFM_TR << CR0_XFM_OFFSET; @@ -681,7 +683,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) master->auto_runtime_pm = true; master->bus_num = pdev->id; - master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP; + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_LSB_FIRST; master->num_chipselect = ROCKCHIP_SPI_MAX_CS_NUM; master->dev.of_node = pdev->dev.of_node; master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8) | SPI_BPW_MASK(4); -- 2.19.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
