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authorDavid S. Miller <davem@davemloft.net>2015-04-08 17:12:50 -0400
committerDavid S. Miller <davem@davemloft.net>2015-04-08 17:12:50 -0400
commit82740b9ac2fbd935361c1dc770ec49b692c28e7d (patch)
tree484bd5cfea3461fbd7c5aa203f4a06a1d8a5d88c /Documentation/devicetree/bindings/net
parent51df60f5a428c249cd458451e0b56269417f3cda (diff)
parent3590ebc040c9ee5d06754ce926f0e7c3a595e46d (diff)
downloadkernel-82740b9ac2fbd935361c1dc770ec49b692c28e7d.tar.gz
Merge tag 'nfc-next-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
Samuel Ortiz says: ==================== NFC: 4.1 pull request This is the NFC pull request for 4.1. This is a shorter one than usual, as the Intel Field Peak NFC driver could not make it in time. We have: - A new driver for NXP NCI based chipsets, like e.g. the NPC100 or the PN7150. It currently only supports an i2c physical layer, but could easily be extended to work on top of e.g. SPI. This driver also includes support for user space triggered firmware updates. - A few minor st21nfc[ab] fixes, cleanups, and comments improvements. - A pn533 error return fix. - A few NFC related logs formatting cleanups. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings/net')
-rw-r--r--Documentation/devicetree/bindings/net/nfc/nxp-nci.txt35
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diff --git a/Documentation/devicetree/bindings/net/nfc/nxp-nci.txt b/Documentation/devicetree/bindings/net/nfc/nxp-nci.txt
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+* NXP Semiconductors NXP NCI NFC Controllers
+
+Required properties:
+- compatible: Should be "nxp,nxp-nci-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 chip
+- firmware-gpios: 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 NPC100 NFC controller on I2C2):
+
+&i2c2 {
+
+ status = "okay";
+
+ npc100: npc100@29 {
+
+ compatible = "nxp,nxp-nci-i2c";
+
+ reg = <0x29>;
+ clock-frequency = <100000>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <29 GPIO_ACTIVE_HIGH>;
+
+ enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
+ firmware-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
+ };
+};