On Mon, Jul 7, 2014 at 9:46 PM, Simon Glass <s...@chromium.org> wrote: > This parameter should also be supported. > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > doc/device-tree-bindings/spi/spi-bus.txt | 2 ++ > drivers/spi/spi.c | 2 ++ > 2 files changed, 4 insertions(+) > > diff --git a/doc/device-tree-bindings/spi/spi-bus.txt > b/doc/device-tree-bindings/spi/spi-bus.txt > index 800dafe..5c8720a 100644 > --- a/doc/device-tree-bindings/spi/spi-bus.txt > +++ b/doc/device-tree-bindings/spi/spi-bus.txt > @@ -59,6 +59,8 @@ contain the following properties. > used for MOSI. Defaults to 1 if not present. > - spi-rx-bus-width - (optional) The bus width(number of data wires) that > used for MISO. Defaults to 1 if not present. > +- spi-half-duplex - (optional) Indicates that the SPI bus should wait for > + a header byte before reading data from the slave. > > Some SPI controllers and devices support Dual and Quad SPI transfer mode. > It allows data in SPI system transfered in 2 wires(DUAL) or 4 wires(QUAD). > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > index 7ddea9b..7d81fbd 100644 > --- a/drivers/spi/spi.c > +++ b/drivers/spi/spi.c > @@ -53,6 +53,8 @@ struct spi_slave *spi_base_setup_slave_fdt(const void > *blob, int busnum, > mode |= SPI_CPHA; > if (fdtdec_get_bool(blob, node, "spi-cs-high")) > mode |= SPI_CS_HIGH; > + if (fdtdec_get_bool(blob, node, "spi-half-duplex")) > + mode |= SPI_PREAMBLE; > return spi_setup_slave(busnum, cs, max_hz, mode); > } > #endif > -- > 2.0.0.526.g5318336 > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot Able to test display on peach_pit(which needs tps65090) with these patches. Also, crosec commands from u-boot prompt works as expected on peach_pit.
Tested-by: Ajay Kumar <ajaykumar...@samsung.com> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
