[PATCH v3 2/3] dt-bindings: net: support for Allwinner R40 EMAC controller

[Evgeny Boger <boger@wirenboard.com>]

R40 and A10/A20 share the same EMAC IP.
However, on R40 the EMAC is gated by default, so reset
property is required.

Signed-off-by: Evgeny Boger <boger@wirenboard.com>
---
 .../net/allwinner,sun4i-a10-emac.yaml         | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/net/allwinner,sun4i-a10-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun4i-a10-emac.yaml
index 8d8560a67abf..cbb297c38daa 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun4i-a10-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun4i-a10-emac.yaml
@@ -15,7 +15,9 @@ maintainers:
 
 properties:
   compatible:
-    const: allwinner,sun4i-a10-emac
+    enum:
+      - allwinner,sun4i-a10-emac
+      - allwinner,sun4i-r40-emac
 
   reg:
     maxItems: 1
@@ -30,6 +32,19 @@ properties:
     description: Phandle to the device SRAM
     $ref: /schemas/types.yaml#/definitions/phandle-array
 
+  resets:
+    maxItems: 1
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: allwinner,sun4i-r40-emac
+
+then:
+  required:
+    - resets
+
 required:
   - compatible
   - reg
@@ -42,11 +57,14 @@ unevaluatedProperties: false
 
 examples:
   - |
+    #define RST_BUS_EMAC		14
+
     emac: ethernet@1c0b000 {
         compatible = "allwinner,sun4i-a10-emac";
         reg = <0x01c0b000 0x1000>;
         interrupts = <55>;
         clocks = <&ahb_gates 17>;
+        resets = <&ccu RST_BUS_EMAC>;
         phy-handle = <&phy0>;
         allwinner,sram = <&emac_sram 1>;
     };
-- 
2.25.1