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Commit ccf614f5 authored by Shikha Singh's avatar Shikha Singh Committed by Samuel Ortiz
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DT: bindings: net: nfc: Add ST95HF binding doc 



This patch includes ST95HF binding doc that guides how to
make node entry of ST95HF in DT file of any platform.

Signed-off-by: default avatarShikha Singh <shikha.singh@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent cab47333

Documentation/devicetree/bindings/net/nfc/st95hf.txt

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* 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>;

	};



};