Initial import

5 files changed, 187 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/net/nfc/nxp-nci.txt b/Documentation/devicetree/bindings/net/nfc/nxp-nci.txt
new file mode 100644
index 000000000..5b6cd9b3f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/nxp-nci.txt
@@ -0,0 +1,35 @@
+* 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>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/net/nfc/pn544.txt b/Documentation/devicetree/bindings/net/nfc/pn544.txt
new file mode 100644
index 000000000..dab69f361
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/pn544.txt
@@ -0,0 +1,35 @@
+* NXP Semiconductors PN544 NFC Controller
+
+Required properties:
+- compatible: Should be "nxp,pn544-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 PN544
+- 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 PN544 on I2C2):
+
+&i2c2 {
+
+	status = "okay";
+
+	pn544: pn544@28 {
+
+		compatible = "nxp,pn544-i2c";
+
+		reg = <0x28>;
+		clock-frequency = <400000>;
+
+		interrupt-parent = <&gpio1>;
+		interrupts = <17 GPIO_ACTIVE_HIGH>;
+
+		enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+		firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfca.txt b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt
new file mode 100644
index 000000000..7bb2e213d
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt
@@ -0,0 +1,40 @@
+* 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.
+- ese-present: Specifies that an ese is physically connected to the nfc
+controller.
+- uicc-present: Specifies that the uicc swp signal can be physically
+connected to the nfc 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>;
+
+		ese-present;
+		uicc-present;
+	};
+};
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfcb.txt b/Documentation/devicetree/bindings/net/nfc/st21nfcb.txt
new file mode 100644
index 000000000..bb237072d
--- /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_HIGH>;
+
+		reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/net/nfc/trf7970a.txt b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
new file mode 100644
index 000000000..7c89ca290
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/trf7970a.txt
@@ -0,0 +1,44 @@
+* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver
+
+Required properties:
+- compatible: Should be "ti,trf7970a".
+- spi-max-frequency: Maximum SPI frequency (<= 2000000).
+- interrupt-parent: phandle of parent interrupt handler.
+- interrupts: A single interrupt specifier.
+- ti,enable-gpios: Two GPIO entries used for 'EN' and 'EN2' pins on the
+  TRF7970A.
+- vin-supply: Regulator for supply voltage to VIN pin
+
+Optional SoC Specific Properties:
+- pinctrl-names: Contains only one value - "default".
+- pintctrl-0: Specifies the pin control groups used for this controller.
+- autosuspend-delay: Specify autosuspend delay in milliseconds.
+- vin-voltage-override: Specify voltage of VIN pin in microvolts.
+- irq-status-read-quirk: Specify that the trf7970a being used has the
+  "IRQ Status Read" erratum.
+- en2-rf-quirk: Specify that the trf7970a being used has the "EN2 RF"
+  erratum.
+
+Example (for ARM-based BeagleBone with TRF7970A on SPI1):
+
+&spi1 {
+	status = "okay";
+
+	nfc@0 {
+		compatible = "ti,trf7970a";
+		reg = <0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&trf7970a_default>;
+		spi-max-frequency = <2000000>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <14 0>;
+		ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>,
+				  <&gpio2 5 GPIO_ACTIVE_LOW>;
+		vin-supply = <&ldo3_reg>;
+		vin-voltage-override = <5000000>;
+		autosuspend-delay = <30000>;
+		irq-status-read-quirk;
+		en2-rf-quirk;
+		status = "okay";
+	};
+};