From: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Date: Thu, 23 Feb 2023 21:56:34 +0530
Subject: spi: tegra210-quad: set half duplex flag
Git-commit: f7482d8285b638be87a594a30edaaf1341135c1a
Patch-mainline: v6.3-rc1
References: bsc#1213534

Tegra QSPI controller only supports half duplex transfers.
Set half duplex constrain flag.

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Link: https://lore.kernel.org/r/20230223162635.19747-3-kyarlagadda@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Ivan T. Ivanov <iivanov@suse.de>
---
 drivers/spi/spi-tegra210-quad.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -1532,6 +1532,7 @@ static int tegra_qspi_probe(struct platf
 	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;