On Wed 2018-10-10 19:09:34, Lubomir Rintel wrote: > This this is used to let the SPI master know that our FIFO is filled and > we're ready to service a transfer. Only useful in slave mode. > > A signal like this is used by an embedded controller on a OLPC XO 1.75 > machine, that happens to be a SPI master. > > Signed-off-by: Lubomir Rintel <lkundrak@xxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> > --- > Documentation/devicetree/bindings/spi/spi-pxa2xx.txt | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt b/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt > index 89b2832283e3..681a82b40e6f 100644 > --- a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt > +++ b/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt > @@ -12,6 +12,8 @@ Optional properties: > - cs-gpios: list of GPIO chip selects. See the SPI bus bindings, > Documentation/devicetree/bindings/spi/spi-bus.txt > - spi-slave: Empty property indicating the SPI controller is used in slave mode. > +- ready-gpio: GPIO used to signal a SPI master that the FIFO is filled > + and we're ready to service a transfer. Only useful in slave mode. > > Child nodes represent devices on the SPI bus > See ../spi/spi-bus.txt -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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