These two DT properties express DTR receive and transmit capabilities of a SPI flash and controller. Introduce two new mode bits: SPI_RX_DTR and SPI_TX_DTR which correspond to the new DT properties. Set these bits when the two corresponding properties are present in the device tree.
Signed-off-by: Pratyush Yadav p.yadav@ti.com --- drivers/spi/spi-uclass.c | 9 +++++++++ include/spi.h | 2 ++ 2 files changed, 11 insertions(+)
diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 4a02d95a34..74e4b5b3ad 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -435,6 +435,7 @@ int spi_slave_ofdata_to_platdata(struct udevice *dev, { int mode = 0; int value; + bool dtr;
plat->cs = dev_read_u32_default(dev, "reg", -1); plat->max_hz = dev_read_u32_default(dev, "spi-max-frequency", @@ -487,6 +488,14 @@ int spi_slave_ofdata_to_platdata(struct udevice *dev, break; }
+ dtr = dev_read_bool(dev, "spi-rx-dtr"); + if (dtr) + mode |= SPI_RX_DTR; + + dtr = dev_read_bool(dev, "spi-tx-dtr"); + if (dtr) + mode |= SPI_TX_DTR; + plat->mode = mode;
return 0; diff --git a/include/spi.h b/include/spi.h index 852f570eaa..64558a5145 100644 --- a/include/spi.h +++ b/include/spi.h @@ -32,6 +32,8 @@ #define SPI_RX_QUAD BIT(13) /* receive with 4 wires */ #define SPI_TX_OCTAL BIT(14) /* transmit with 8 wires */ #define SPI_RX_OCTAL BIT(15) /* receive with 8 wires */ +#define SPI_TX_DTR BIT(16) /* transmit in DTR protocol */ +#define SPI_RX_DTR BIT(17) /* receive in DTR protocol */
/* Header byte that marks the start of the message */ #define SPI_PREAMBLE_END_BYTE 0xec