Tegra QSPI controller only supports half duplex transfers. Set half duplex constrain flag. Signed-off-by: Krishna Yarlagadda <kyarlagadda@xxxxxxxxxx> --- drivers/spi/spi-tegra210-quad.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c index 39dec2dc161b..fe15fa6eecd1 100644 --- a/drivers/spi/spi-tegra210-quad.c +++ b/drivers/spi/spi-tegra210-quad.c @@ -1553,6 +1553,7 @@ static int tegra_qspi_probe(struct platform_device *pdev) master->mode_bits = SPI_MODE_0 | SPI_MODE_3 | SPI_CS_HIGH | SPI_TX_DUAL | SPI_RX_DUAL | SPI_TX_QUAD | SPI_RX_QUAD; master->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(16) | SPI_BPW_MASK(8); + master->flags = SPI_CONTROLLER_HALF_DUPLEX; master->setup = tegra_qspi_setup; master->transfer_one_message = tegra_qspi_transfer_one_message; master->num_chipselect = 1; -- 2.17.1
