On Wed, Oct 15, 2008 at 03:00:47PM +0200, Wolfgang Ocker wrote: > The patch allows to specify that an SPI device needs an active high chip > select.
This look reasonable to me. Anyone else have comments on this binding? g. > > Signed-off-by: Wolfgang Ocker <[EMAIL PROTECTED]> > --- > > --- linux-2.6.27-rc7/drivers/of/of_spi.c.of_spi_cshigh 2008-09-22 > 00:29:55.000000000 +0200 > +++ linux-2.6.27-rc7/drivers/of/of_spi.c 2008-09-29 13:43:06.000000000 > +0200 > @@ -61,6 +61,8 @@ > spi->mode |= SPI_CPHA; > if (of_find_property(nc, "spi-cpol", NULL)) > spi->mode |= SPI_CPOL; > + if (of_find_property(nc, "spi-cs-high", NULL)) > + spi->mode |= SPI_CS_HIGH; > > /* Device speed */ > prop = of_get_property(nc, "spi-max-frequency", &len); > --- > linux-2.6.27-rc7/Documentation/powerpc/booting-without-of.txt.of_spi_cshigh > 2008-09-29 14:14:08.000000000 +0200 > +++ linux-2.6.27-rc7/Documentation/powerpc/booting-without-of.txt > 2008-09-29 14:24:26.000000000 +0200 > @@ -1917,6 +1917,8 @@ > inverse clock polarity (CPOL) mode > - spi-cpha - (optional) Empty property indicating device requires > shifted clock phase (CPHA) mode > + - spi-cs-high - (optional) Empty property indicating device requires > + chip select active high > > SPI example for an MPC5200 SPI bus: > [EMAIL PROTECTED] { > > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev