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authorDavid S. Miller <davem@davemloft.net>2016-05-12 03:00:54 +0300
committerDavid S. Miller <davem@davemloft.net>2016-05-12 03:00:54 +0300
commit631ad4a3e74d998b089e75983c0c5bf893c94b62 (patch)
treec66cf156a5a6a3d168dfbcfddee480d059a1c1ec /Documentation
parent6a47a570321fdcd2b6fc9e6537b2a3650d0fd04b (diff)
parentb31d5103c33280738188c51e226224dff4401c7b (diff)
downloadlinux-631ad4a3e74d998b089e75983c0c5bf893c94b62.tar.xz
Merge tag 'nfc-next-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
Samuel Ortiz says: ==================== NFC 4.7 pull request This is the first NFC pull request for 4.7. With this one we mainly have: - Support for NXP's pn532 NFC chipset. The pn532 is based on the same microcontroller as the pn533, but it talks to the host through i2c instead of USB. By separating the pn533 driver into core and PHY parts, we can not add the i2c layer and support the pn532 chipset. - Support for NCI's loopback mode. This is a testing mode where each packet received by the NFCC is sent back to the DH, allowing the host to test that the controller can receive and send data. - A few ACPI related fixes for the STMicro drivers, in order to match the device tree naming scheme. - A bunch of cleanups for the st-nci and the st21nfca STMicro drivers. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt31
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diff --git a/Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt b/Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt
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+* NXP Semiconductors PN532 NFC Controller
+
+Required properties:
+- compatible: Should be "nxp,pn532-i2c" or "nxp,pn533-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
+
+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 PN532 on I2C2):
+
+&i2c2 {
+
+ status = "okay";
+
+ pn532: pn532@24 {
+
+ compatible = "nxp,pn532-i2c";
+
+ reg = <0x24>;
+ clock-frequency = <400000>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
+
+ };
+};