linux-kernel - [PATCH v9 net-next 01/11] dt-bindings: net: make internal-delay-ps based on phy-mode

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Message-ID: <20220318085540.281721-2-prasanna.vengateshan@microchip.com>
Date:   Fri, 18 Mar 2022 14:25:30 +0530
From:   Prasanna Vengateshan <prasanna.vengateshan@...rochip.com>
To:     <andrew@...n.ch>, <netdev@...r.kernel.org>, <olteanv@...il.com>,
        <robh+dt@...nel.org>
CC:     <UNGLinuxDriver@...rochip.com>, <woojung.huh@...rochip.com>,
        <hkallweit1@...il.com>, <linux@...linux.org.uk>,
        <davem@...emloft.net>, <kuba@...nel.org>,
        <linux-kernel@...r.kernel.org>, <vivien.didelot@...il.com>,
        <f.fainelli@...il.com>, <devicetree@...r.kernel.org>
Subject: [PATCH v9 net-next 01/11] dt-bindings: net: make internal-delay-ps based on phy-mode

*-internal-delay-ps properties would be applicable only for RGMII interface
modes.

It is changed as per the request,
https://lore.kernel.org/netdev/d8e5f6a8-a7e1-dabd-f4b4-ea8ea21d0a1d@gmail.com/

Ran dt_binding_check to confirm nothing is broken and submitting as a RFC
patch to receive feedback.

Signed-off-by: Prasanna Vengateshan <prasanna.vengateshan@...rochip.com>
---
 .../bindings/net/ethernet-controller.yaml     | 37 +++++++++++++------
 1 file changed, 25 insertions(+), 12 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/ethernet-controller.yaml b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
index 34c5463abcec..609483a8e404 100644
--- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
@@ -123,12 +123,6 @@ properties:
       and is useful for determining certain configuration settings
       such as flow control thresholds.
 
-  rx-internal-delay-ps:
-    description: |
-      RGMII Receive Clock Delay defined in pico seconds.
-      This is used for controllers that have configurable RX internal delays.
-      If this property is present then the MAC applies the RX delay.
-
   sfp:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
@@ -140,12 +134,6 @@ properties:
       The size of the controller\'s transmit fifo in bytes. This
       is used for components that can have configurable fifo sizes.
 
-  tx-internal-delay-ps:
-    description: |
-      RGMII Transmit Clock Delay defined in pico seconds.
-      This is used for controllers that have configurable TX internal delays.
-      If this property is present then the MAC applies the TX delay.
-
   managed:
     description:
       Specifies the PHY management type. If auto is set and fixed-link
@@ -222,6 +210,31 @@ properties:
           required:
             - speed
 
+allOf:
+  - if:
+      properties:
+        phy-mode:
+          contains:
+            enum:
+              - rgmii
+              - rgmii-rxid
+              - rgmii-txid
+              - rgmii-id
+            then:
+              properties:
+                rx-internal-delay-ps:
+                  description:
+                    RGMII Receive Clock Delay defined in pico seconds.This is 
+                    used for controllers that have configurable RX internal 
+                    delays. If this property is present then the MAC applies 
+                    the RX delay.
+                tx-internal-delay-ps:
+                   description:
+                    RGMII Transmit Clock Delay defined in pico seconds.This is
+                    used for controllers that have configurable TX internal
+                    delays. If this property is present then the MAC applies
+                    the TX delay. 
+
 additionalProperties: true
 
 ...
-- 
2.30.2