Implement MOSI idle low and MOSI idle high to better support peripherals that request specific MOSI behavior. Signed-off-by: Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx> --- drivers/spi/spi-axi-spi-engine.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-engine.c index 0aa31d745734..549f03069d0e 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -41,6 +41,7 @@ #define SPI_ENGINE_CONFIG_CPHA BIT(0) #define SPI_ENGINE_CONFIG_CPOL BIT(1) #define SPI_ENGINE_CONFIG_3WIRE BIT(2) +#define SPI_ENGINE_CONFIG_SDO_IDLE BIT(3) #define SPI_ENGINE_INST_TRANSFER 0x0 #define SPI_ENGINE_INST_ASSERT 0x1 @@ -132,6 +133,10 @@ static unsigned int spi_engine_get_config(struct spi_device *spi) config |= SPI_ENGINE_CONFIG_CPHA; if (spi->mode & SPI_3WIRE) config |= SPI_ENGINE_CONFIG_3WIRE; + if (spi->mode & SPI_MOSI_IDLE_HIGH) + config |= SPI_ENGINE_CONFIG_SDO_IDLE; + if (spi->mode & SPI_MOSI_IDLE_LOW) + config &= ~SPI_ENGINE_CONFIG_SDO_IDLE; return config; } @@ -645,7 +650,8 @@ static int spi_engine_probe(struct platform_device *pdev) return ret; host->dev.of_node = pdev->dev.of_node; - host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_3WIRE; + host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_3WIRE | SPI_MOSI_IDLE_LOW + | SPI_MOSI_IDLE_HIGH; host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); host->max_speed_hz = clk_get_rate(spi_engine->ref_clk) / 2; host->transfer_one_message = spi_engine_transfer_one_message; -- 2.43.0
