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Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/net/nfc/st21nfca.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfca.txt b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt new file mode 100644 index 000000000000..4724fe669172 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt @@ -0,0 +1,33 @@ +* STMicroelectronics SAS. ST21NFCA NFC Controller + +Required properties: +- compatible: Should be "st,st21nfca-i2c". +- clock-frequency: I²C work frequency. +- reg: address on the bus +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected +- enable-gpios: Output GPIO pin used for enabling/disabling the ST21NFCA + +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 ST21NFCA on I2C2): + +&i2c2 { + + status = "okay"; + + st21nfca: st21nfca@1 { + + compatible = "st,st21nfca_i2c"; + + reg = <0x01>; + clock-frequency = <400000>; + + interrupt-parent = <&gpio5>; + interrupts = <2 IRQ_TYPE_LEVEL_LOW>; + + enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; + }; +}; |