linux-kernel - [PATCH net-next 1/2] dt-bindings: net: nfc: s3fwrn5: Support a UART interface

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Date:   Mon, 23 Nov 2020 16:55:26 +0900
From:   Bongsu Jeon <bongsu.jeon@...sung.com>
To:     "krzk@...nel.org" <krzk@...nel.org>,
        "kuba@...nel.org" <kuba@...nel.org>
CC:     "linux-nfc@...ts.01.org" <linux-nfc@...ts.01.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 1/2] dt-bindings: net: nfc: s3fwrn5: Support a UART
 interface

Since S3FWRN82 NFC Chip, The UART interface can be used.
S3FWRN82 supports I2C and UART interface.

Signed-off-by: Bongsu Jeon <bongsu.jeon@...sung.com>
---
 .../bindings/net/nfc/samsung,s3fwrn5.yaml     | 28 +++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml b/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
index cb0b8a560282..37b3e5ae5681 100644
--- a/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
+++ b/Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
@@ -13,6 +13,7 @@ maintainers:
 properties:
   compatible:
     const: samsung,s3fwrn5-i2c
+    const: samsung,s3fwrn82-uart
 
   en-gpios:
     maxItems: 1
@@ -47,10 +48,19 @@ additionalProperties: false
 required:
   - compatible
   - en-gpios
-  - interrupts
-  - reg
   - wake-gpios
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,s3fwrn5-i2c
+    then:
+      required:
+        - interrupts
+        - reg
+
 examples:
   - |
     #include <dt-bindings/gpio/gpio.h>
@@ -71,3 +81,17 @@ examples:
             wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
         };
     };
+  # UART example on Raspberry Pi
+  - |
+    &uart0 {
+        status = "okay";
+
+        s3fwrn82_uart {
+            compatible = "samsung,s3fwrn82-uart";
+
+            en-gpios = <&gpio 20 0>;
+            wake-gpios = <&gpio 16 0>;
+
+            status = "okay";
+        };
+    };
-- 
2.17.1