From: Krishna Yarlagadda <kyarlagadda@nvidia.com>
To: <robh+dt@kernel.org>, <broonie@kernel.org>, <peterhuewe@gmx.de>,
<jgg@ziepe.ca>, <jarkko@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <linux-spi@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-integrity@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
<skomatineni@nvidia.com>, <ldewangan@nvidia.com>,
Krishna Yarlagadda <kyarlagadda@nvidia.com>
Subject: [Patch V4 3/3] spi: tegra210-quad: set half duplex flag
Date: Fri, 24 Feb 2023 21:19:41 +0530 [thread overview]
Message-ID: <20230224154941.68587-4-kyarlagadda@nvidia.com> (raw)
In-Reply-To: <20230224154941.68587-1-kyarlagadda@nvidia.com>
Tegra QSPI controller only supports half duplex transfers.
Set half duplex constrain flag.
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
---
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
next prev parent reply other threads:[~2023-02-24 15:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-24 15:49 [Patch V4 0/3] Tegra TPM driver with HW flow control Krishna Yarlagadda
2023-02-24 15:49 ` [Patch V4 1/3] spi: Add TPM HW flow flag Krishna Yarlagadda
2023-02-24 15:49 ` [Patch V4 2/3] tpm_tis-spi: Support hardware wait polling Krishna Yarlagadda
2023-02-24 15:49 ` Krishna Yarlagadda [this message]
2023-02-24 16:37 ` [Patch V4 3/3] spi: tegra210-quad: set half duplex flag Mark Brown
2023-02-24 16:43 ` Krishna Yarlagadda
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