Describe the properties used by the PN544 NFC controller driver.
Signed-off-by: Clément Perrochaud <[email protected]>
---
.../devicetree/bindings/net/nfc/pn544.txt | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/nfc/pn544.txt
diff --git a/Documentation/devicetree/bindings/net/nfc/pn544.txt
b/Documentation/devicetree/bindings/net/nfc/pn544.txt
new file mode 100644
index 0000000..2017ad5
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/pn544.txt
@@ -0,0 +1,32 @@
+* NXP Semiconductors PN544 NFC Controller
+
+Required properties:
+- compatible: Should be "nxp,pn544_i2c".
+- clock-frequency: I²C work frequency.
+- reg: address on the bus
+- irq: Input GPIO pin used for interrupt requests from the controller
+- en: Output GPIO pin used for enabling/disabling the PN544
+- fw:Output GPIO pin used to enter firmware download mode
+
+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 BeagleBone with PN544 on I2C2):
+
+&i2c2 {
+
+ status = "okay";
+
+ pn544: pn544@28 {
+
+ compatible = "nxp,pn544_i2c";
+
+ reg = <0x28>;
+ clock-frequency = <400000>;
+
+ irq = <&gpio1 17 GPIO_ACTIVE_HIGH>;
+ en = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+ fw = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+ };
+};
--
1.9.0
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