Describe the properties used by the st21nfcb NFC controller driver.
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.../devicetree/bindings/net/nfc/st21nfcb.txt | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/nfc/st21nfcb.txt
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfcb.txt
b/Documentation/devicetree/bindings/net/nfc/st21nfcb.txt
new file mode 100644
index 0000000..3b58ae4
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/st21nfcb.txt
@@ -0,0 +1,33 @@
+* STMicroelectronics SAS. ST21NFCB NFC Controller
+
+Required properties:
+- compatible: Should be "st,st21nfcb_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
+- 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 I2C2):
+
+&i2c2 {
+
+ status = "okay";
+
+ st21nfcb: st21nfcb@8 {
+
+ compatible = "st,st21nfcb_i2c";
+
+ reg = <0x08>;
+ clock-frequency = <400000>;
+
+ interrupt-parent = <&gpio5>;
+ interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
+
+ reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+ };
+};
--
1.9.1
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