linux-kernel - [PATCH v1 1/2] dt-bindings: net: motorcomm: Add pad driver strength cfg

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Message-ID: <20230426063541.15378-2-samin.guo@starfivetech.com>
Date:   Wed, 26 Apr 2023 14:35:40 +0800
From:   Samin Guo <samin.guo@...rfivetech.com>
To:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <netdev@...r.kernel.org>, Peter Geis <pgwipeout@...il.com>,
        Frank <Frank.Sae@...or-comm.com>
CC:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        "Heiner Kallweit" <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "Samin Guo" <samin.guo@...rfivetech.com>,
        Yanhong Wang <yanhong.wang@...rfivetech.com>
Subject: [PATCH v1 1/2] dt-bindings: net: motorcomm: Add pad driver strength cfg

The motorcomm phy (YT8531) supports the ability to adjust the drive
strength of the rx_clk/rx_data, the value range of pad driver
strength is 0 to 7.

Signed-off-by: Samin Guo <samin.guo@...rfivetech.com>
---
 .../devicetree/bindings/net/motorcomm,yt8xxx.yaml      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
index 157e3bbcaf6f..e648e486b6d8 100644
--- a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
+++ b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
@@ -18,6 +18,16 @@ properties:
       - ethernet-phy-id4f51.e91a
       - ethernet-phy-id4f51.e91b
 
+  rx-clk-driver-strength:
+    description: drive strength of rx_clk pad.
+    enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ]
+    default: 3
+
+  rx-data-driver-strength:
+    description: drive strength of rxd/rx_ctl rgmii pad.
+    enum: [ 0, 1, 2, 3, 4, 5, 6, 7 ]
+    default: 3
+
   rx-internal-delay-ps:
     description: |
       RGMII RX Clock Delay used only when PHY operates in RGMII mode with
-- 
2.17.1