Implement MOSI idle low and MOSI idle high to better support peripherals that request specific MOSI behavior. Acked-by: Nuno Sa <nuno.sa@xxxxxxxxxx> Reviewed-by: David Lechner <dlechner@xxxxxxxxxxxx> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx> --- drivers/spi/spi-axi-spi-engine.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-engine.c index 3231f67ae265..e2042d7368bd 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_HIGH BIT(3) #define SPI_ENGINE_INST_TRANSFER 0x0 #define SPI_ENGINE_INST_ASSERT 0x1 @@ -137,6 +138,10 @@ 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_HIGH; + if (spi->mode & SPI_MOSI_IDLE_LOW) + config &= ~SPI_ENGINE_CONFIG_SDO_IDLE_HIGH; return config; } @@ -682,9 +687,13 @@ static int spi_engine_probe(struct platform_device *pdev) host->num_chipselect = 8; /* Some features depend of the IP core version. */ - if (ADI_AXI_PCORE_VER_MINOR(version) >= 2) { - host->mode_bits |= SPI_CS_HIGH; - host->setup = spi_engine_setup; + if (ADI_AXI_PCORE_VER_MAJOR(version) >= 1) { + if (ADI_AXI_PCORE_VER_MINOR(version) >= 2) { + host->mode_bits |= SPI_CS_HIGH; + host->setup = spi_engine_setup; + } + if (ADI_AXI_PCORE_VER_MINOR(version) >= 3) + host->mode_bits |= SPI_MOSI_IDLE_LOW | SPI_MOSI_IDLE_HIGH; } if (host->max_speed_hz == 0) -- 2.43.0