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| -rw-r--r-- | Documentation/devicetree/bindings/net/nfc/st95hf.txt | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/st95hf.txt b/Documentation/devicetree/bindings/net/nfc/st95hf.txt new file mode 100644 index 000000000000..ea3178bc9ddd --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/st95hf.txt @@ -0,0 +1,50 @@ +* STMicroelectronics : NFC Transceiver ST95HF + +ST NFC Transceiver is required to attach with SPI bus. +ST95HF node should be defined in DT as SPI slave device of SPI +master with which ST95HF transceiver is physically connected. +The properties defined below are required to be the part of DT +to include ST95HF transceiver into the platform. + +Required properties: +=================== +- reg: Address of SPI slave "ST95HF transceiver" on SPI master bus. + +- compatible: should be "st,st95hf" for ST95HF NFC transceiver + +- spi-max-frequency: Max. operating SPI frequency for ST95HF + transceiver. + +- enable-gpio: GPIO line to enable ST95HF transceiver. + +- interrupt-parent : Standard way to specify the controller to which + ST95HF transceiver's interrupt is routed. + +- interrupts : Standard way to define ST95HF transceiver's out + interrupt. + +Optional property: +================= +- st95hfvin-supply : This is an optional property. It contains a + phandle to ST95HF transceiver's regulator supply node in DT. + +Example: +======= +spi@9840000 { + reg = <0x9840000 0x110>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&pio0 4>; + status = "okay"; + + st95hf@0{ + reg = <0>; + compatible = "st,st95hf"; + status = "okay"; + spi-max-frequency = <1000000>; + enable-gpio = <&pio4 0>; + interrupt-parent = <&pio0>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + }; + +}; |