netdev - [PATCH net-next 2/2] nfc: s3fwrn82: Add driver for Samsung S3FWRN82 NFC Chip

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Date:   Fri, 13 Nov 2020 14:09:19 +0900
From:   Bongsu Jeon <bongsu.jeon@...sung.com>
To:     "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: [PATCH net-next 2/2] nfc: s3fwrn82: Add driver for Samsung S3FWRN82
 NFC Chip


Add the device tree bindings for Samsung S3FWRN82 NFC controller.
S3FWRN82 is using NCI protocol and I2C communication interface.

Signed-off-by: Bongsu Jeon <bongsu.jeon@...sung.com>
---
 .../devicetree/bindings/net/nfc/s3fwrn82.txt  | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/nfc/s3fwrn82.txt

diff --git a/Documentation/devicetree/bindings/net/nfc/s3fwrn82.txt b/Documentation/devicetree/bindings/net/nfc/s3fwrn82.txt
new file mode 100644
index 000000000000..03ed880e1c7f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nfc/s3fwrn82.txt
@@ -0,0 +1,30 @@
+* Samsung S3FWRN82 NCI NFC Controller
+
+Required properties:
+- compatible: Should be "samsung,s3fwrn82-i2c".
+- reg: address on the bus
+- interrupts: GPIO interrupt to which the chip is connected
+- en-gpios: Output GPIO pin used for enabling/disabling the chip
+- wake-gpios: Output GPIO pin used to enter firmware mode and
+  sleep/wakeup control
+
+Example:
+
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c4 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        s3fwrn82@27 {
+            compatible = "samsung,s3fwrn82-i2c";
+            reg = <0x27>;
+
+            interrupt-parent = <&gpa1>;
+            interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+
+            en-gpios = <&gpf1 4 GPIO_ACTIVE_HIGH>;
+            wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
+        };
+    };
--