| Message ID | 1404749802-22450-3-git-send-email-sjg@chromium.org |
|---|---|
| State | Accepted |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
On Mon, Jul 7, 2014 at 9:46 PM, Simon Glass <sjg@chromium.org> wrote: > This parameter should also be supported. > > Signed-off-by: Simon Glass <sjg@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.rs@samsung.com>
On Tue, Jul 8, 2014 at 11:41 AM, Ajay kumar <ajaynumb@gmail.com> wrote: > On Mon, Jul 7, 2014 at 9:46 PM, Simon Glass <sjg@chromium.org> wrote: >> This parameter should also be supported. >> >> Signed-off-by: Simon Glass <sjg@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.rs@samsung.com> Applied to u-boot-spi/master thanks!
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
This parameter should also be supported. Signed-off-by: Simon Glass <sjg@chromium.org> --- doc/device-tree-bindings/spi/spi-bus.txt | 2 ++ drivers/spi/spi.c | 2 ++ 2 files changed, 4 insertions(+)