From fc6c8af6d784961b7f19bf0870baa1cdab5f7ad5 Mon Sep 17 00:00:00 2001
From: Jacky Chou <jacky_chou@aspeedtech.com>
Date: Wed, 9 Jul 2025 15:08:06 +0800
Subject: [PATCH] dt-bindings: net: ftgmac100: Add resets property

In Aspeed AST2600 design, the MAC internal delay on MAC register cannot
fully reset the RMII interfaces, it may cause the RMII incompletely.
Therefore, we need to add resets property to do SoC-level reset line to
reset the whole MAC function that includes ftgmac, RGMII and RMII.

Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250709070809.2560688-2-jacky_chou@aspeedtech.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 .../bindings/net/faraday,ftgmac100.yaml       | 21 ++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml b/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml
index 55d6a8379025b..d14410018bcf6 100644
--- a/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml
+++ b/Documentation/devicetree/bindings/net/faraday,ftgmac100.yaml
@@ -6,9 +6,6 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Faraday Technology FTGMAC100 gigabit ethernet controller
 
-allOf:
-  - $ref: ethernet-controller.yaml#
-
 maintainers:
   - Po-Yu Chuang <ratbert@faraday-tech.com>
 
@@ -35,6 +32,9 @@ properties:
       - description: MAC IP clock
       - description: RMII RCLK gate for AST2500/2600
 
+  resets:
+    maxItems: 1
+
   clock-names:
     minItems: 1
     items:
@@ -74,6 +74,21 @@ required:
   - reg
   - interrupts
 
+allOf:
+  - $ref: ethernet-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - aspeed,ast2600-mac
+    then:
+      properties:
+        resets: true
+    else:
+      properties:
+        resets: false
+
 unevaluatedProperties: false
 
 examples:
-- 
2.47.2