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 +- 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. +- 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. +- 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. + +Example: + +/* Freescale i.MX28 SPI master*/ +ssp2: ssp@80014000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx28-spi"; + pinctrl-names = "default"; + pinctrl-0 = <&spi2_pins_a>; + status = "okay"; + + qca7000@0 { + compatible = "qca,qca7000"; + reg = <0x0>; + spi-cpha; /* SPI mode: CPHA=1 */ + spi-cpol; /* SPI mode: CPOL=1 */ + spi-max-frequency = <8000000>; /* freq: 8 MHz */ + intr-gpios = <&gpio3 25 0>; /* GPIO3_25 */ + qca,legacy-mode = <0>; /* Burst mode */ + local-mac-address = [ A0 B0 C0 D0 E0 F0 ]; + linux,burst-length = <5000>; + linux,pluggable-connection; + }; +}; -- 1.7.10.4 -- 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
