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| author | Mark A. Greer <mgreer@animalcreek.com> | 2014-03-10 11:56:25 -0700 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2014-03-11 00:47:09 +0100 |
| commit | 7ebb88e539028f3c144c0c34d3ae187e73238cb6 (patch) | |
| tree | fbfc72b5db037988536e48dfb736fce5a656f6d9 /Documentation | |
| parent | 9d9304b32154be5908a3abbb46215297b9ce0a4c (diff) | |
| download | op-kernel-dev-7ebb88e539028f3c144c0c34d3ae187e73238cb6.zip op-kernel-dev-7ebb88e539028f3c144c0c34d3ae187e73238cb6.tar.gz | |
NFC: trf7970a: Add DTS Documentation
Describe the properies used by the trf7970a
RFID/NFC/15693 transceiver driver.
Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/nfc/trf7970a.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt new file mode 100644 index 0000000..8dd3ef7 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt @@ -0,0 +1,34 @@ +* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver + +Required properties: +- compatible: Should be "ti,trf7970a". +- spi-max-frequency: Maximum SPI frequency (<= 2000000). +- interrupt-parent: phandle of parent interrupt handler. +- interrupts: A single interrupt specifier. +- ti,enable-gpios: Two GPIO entries used for 'EN' and 'EN2' pins on the + TRF7970A. +- vin-supply: Regulator for supply voltage to VIN pin + +Optional SoC Specific Properties: +- pinctrl-names: Contains only one value - "default". +- pintctrl-0: Specifies the pin control groups used for this controller. + +Example (for ARM-based BeagleBone with TRF7970A on SPI1): + +&spi1 { + status = "okay"; + + nfc@0 { + compatible = "ti,trf7970a"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&trf7970a_default>; + spi-max-frequency = <2000000>; + interrupt-parent = <&gpio2>; + interrupts = <14 0>; + ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>, + <&gpio2 5 GPIO_ACTIVE_LOW>; + vin-supply = <&ldo3_reg>; + status = "okay"; + }; +}; |
