On Mon, Apr 28, 2014 at 06:54:56PM +0100, Stefan Wahren wrote: > This patch adds the Device tree bindings for the Ethernet over SPI > protocol driver of the Qualcomm QCA7000 HomePlug GreenPHY. > > Signed-off-by: Stefan Wahren <[email protected]> > --- > .../devicetree/bindings/net/qca-qca7000-spi.txt | 51 > ++++++++++++++++++++ > 1 file changed, 51 insertions(+) > create mode 100644 Documentation/devicetree/bindings/net/qca-qca7000-spi.txt > > diff --git a/Documentation/devicetree/bindings/net/qca-qca7000-spi.txt > b/Documentation/devicetree/bindings/net/qca-qca7000-spi.txt > new file mode 100644 > index 0000000..132c10f > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/qca-qca7000-spi.txt > @@ -0,0 +1,51 @@ > +* Qualcomm QCA7000 (Ethernet over SPI protocol) > + > +Note: The QCA7000 is useable as a SPI device. In this case it must be defined > +as a child of a spi master in the device tree. > + > +Required properties: > +- compatible : Should be "qca,qca7000" > +- reg : Should specify the SPI chip select > +- intr-gpios : Should specify the GPIO for SPI interrupt
As Arnd mentioned, this should be described as an interrupt if it's an interrupt from the point of view of the QCA7000. > +- spi-cpha : Must be set > +- spi-cpol: Must be set > + > +Optional properties: > +- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate > at. > + Numbers smaller than 1000000 or greater than 16000000 are invalid. Missing > + the property will set the SPI frequency to 8000000 Hertz. > +- local-mac-address: 6 bytes, mac address > +- qca,legacy-mode : Should specify the data transfer mode of the QCA7000 > + (0 = burst mode, 1 = legacy mode). Missing the property will use the > + burst mode. This sounds like it could be a boolean property (one with no value, like cpi-cpha). When is this necessary? > +- linux,burst-length : Number of data bytes per burst. Numbers smaller than 1 > + or greater than 5000 are invalid. Missing the property will set the > + burst length to 5000 bytes. This property has only an effect in burst mode. When is this needed? > +- linux,pluggable-connection : Should be set to skip signature check while > + probing. This property is useful if the SPI master and QCA7000 are not on > the > + same board. This does not sounds like it belongs in the DT, as it's strongly tied to the implementation of the driver. Why is this necessary? Cheers, Mark. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
