netdev - [PATCH v2 2/2] dt-bindings: net: adin: Document bindings for fast link down disable

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Date:   Tue, 28 Feb 2023 13:49:56 -0500
From:   Ken Sloat <ken.s@...iscite.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     noname.nuno@...il.com, pabeni@...hat.com, edumazet@...gle.com,
        Ken Sloat <ken.s@...iscite.com>,
        Michael Hennerich <michael.hennerich@...log.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Alexandru Tachici <alexandru.tachici@...log.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] dt-bindings: net: adin: Document bindings for fast link down disable

The ADI PHY contains a feature commonly known as "Fast Link Down" and
called "Enhanced Link Detection" by ADI. This feature is enabled by
default and provides earlier detection of link loss in certain
situations.

Document the new optional flags "adi,disable-fast-down-1000base-t" and
"adi,disable-fast-down-100base-tx" which disable the "Fast Link Down"
feature in the ADI PHY.

Signed-off-by: Ken Sloat <ken.s@...iscite.com>
---
 Documentation/devicetree/bindings/net/adi,adin.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/adi,adin.yaml b/Documentation/devicetree/bindings/net/adi,adin.yaml
index 64ec1ec71ccd..923baff26c3e 100644
--- a/Documentation/devicetree/bindings/net/adi,adin.yaml
+++ b/Documentation/devicetree/bindings/net/adi,adin.yaml
@@ -52,6 +52,18 @@ properties:
     description: Enable 25MHz reference clock output on CLK25_REF pin.
     type: boolean
 
+  adi,disable-fast-down-1000base-t:
+    $ref: /schemas/types.yaml#definitions/flag
+    description: |
+      If set, disables any ADI fast link down ("Enhanced Link Detection")
+      function bits for 1000base-t interfaces.
+
+  adi,disable-fast-down-100base-tx:
+    $ref: /schemas/types.yaml#definitions/flag
+    description: |
+      If set, disables any ADI fast link down ("Enhanced Link Detection")
+      function bits for 100base-tx interfaces.
+
 unevaluatedProperties: false
 
   adi,phy-mode-override:
-- 
2.34.1