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Commit a6be357e authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz
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nfc: st-nci: Add device tree documentation for spi phy 



Add st-nci-spi phy devicetree documentation

Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 2bc4d4f8

Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt

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+31 −0
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* STMicroelectronics SAS. ST NCI NFC Controller



Required properties:

- compatible: Should be "st,st21nfcb-spi"

- spi-max-frequency: Maximum SPI frequency (<= 10000000).

- interrupt-parent: phandle for the interrupt gpio controller

- interrupts: GPIO interrupt to which the chip is connected

- reset-gpios: Output GPIO pin used to reset the ST21NFCB



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 BeagleBoard xM with ST21NFCB on SPI4):



&mcspi4 {



	status = "okay";



	st21nfcb: st21nfcb@0 {



		compatible = "st,st21nfcb-spi";



		clock-frequency = <4000000>;



		interrupt-parent = <&gpio5>;

		interrupts = <2 IRQ_TYPE_EDGE_RISING>;



		reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;

	};

};