dt-bindings: serial: Convert slave-device bindings to json-schema

[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / serial / serial.yaml

diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index ca2ae75..dd97ecd 100644 (file)
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -7,6 +7,7 @@ $schema: "http://devicetree.org/meta-schemas/core.yaml#"
 title: Serial Interface Generic DT Bindings
 
 maintainers:
+  - Rob Herring <robh@kernel.org>
   - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 
 description:
@@ -69,3 +70,58 @@ then:
   properties:
     cts-gpios: false
     rts-gpios: false
+
+patternProperties:
+  ".*":
+    if:
+      type: object
+    then:
+      description:
+        Serial attached devices shall be a child node of the host UART device
+        the slave device is attached to. It is expected that the attached
+        device is the only child node of the UART device. The slave device node
+        name shall reflect the generic type of device for the node.
+
+      properties:
+        compatible:
+          description:
+            Compatible of the device connected to the serial port.
+
+        max-speed:
+          $ref: /schemas/types.yaml#/definitions/uint32
+          description:
+            The maximum baud rate the device operates at.
+            This should only be present if the maximum is less than the slave
+            device can support.  For example, a particular board has some
+            signal quality issue or the host processor can't support higher
+            baud rates.
+
+        current-speed:
+          $ref: /schemas/types.yaml#/definitions/uint32
+          description: |
+            The current baud rate the device operates at.
+            This should only be present in case a driver has no chance to know
+            the baud rate of the slave device.
+            Examples:
+              * device supports auto-baud
+              * the rate is setup by a bootloader and there is no way to reset
+                the device
+              * device baud rate is configured by its firmware but there is no
+                way to request the actual settings
+
+      required:
+        - compatible
+
+examples:
+  - |
+    serial@1234 {
+            compatible = "ns16550a";
+            reg = <0x1234 0x20>;
+            interrupts = <1>;
+
+            bluetooth {
+                    compatible = "brcm,bcm43341-bt";
+                    interrupt-parent = <&gpio>;
+                    interrupts = <10>;
+            };
+    };