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Message-ID: <20211011142215.9013-8-alexandru.tachici@analog.com>
Date:   Mon, 11 Oct 2021 17:22:14 +0300
From:   <alexandru.tachici@...log.com>
To:     <andrew@...n.ch>
CC:     <o.rempel@...gutronix.de>, <alexandru.tachici@...log.com>,
        <davem@...emloft.net>, <devicetree@...r.kernel.org>,
        <hkallweit1@...il.com>, <kuba@...nel.org>,
        <linux-kernel@...r.kernel.org>, <linux@...linux.org.uk>,
        <netdev@...r.kernel.org>, <robh+dt@...nel.org>
Subject: [PATCH v3 7/8] dt-bindings: net: phy: Add 10-baseT1L 2.4 Vpp

From: Alexandru Tachici <alexandru.tachici@...log.com>

Add a tristate property to advertise desired transmit level.

If the device supports the 2.4 Vpp operating mode for 10BASE-T1L,
as defined in 802.3gc, and the 2.4 Vpp transmit voltage operation
is desired, property should be set to 1. This property is used
to select whether Auto-Negotiation advertises a request to
operate the 10BASE-T1L PHY in increased transmit level mode.

If property is set to 1, the PHY shall advertise a request
to operate the 10BASE-T1L PHY in increased transmit level mode.
If property is set to zero, the PHY shall not advertise
a request to operate the 10BASE-T1L PHY in increased transmit level mode.

Signed-off-by: Alexandru Tachici <alexandru.tachici@...log.com>
---
 Documentation/devicetree/bindings/net/ethernet-phy.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
index 2766fe45bb98..2bb3a96612a2 100644
--- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
@@ -77,6 +77,15 @@ properties:
     description:
       Maximum PHY supported speed in Mbits / seconds.
 
+  an-10base-t1l-2.4vpp:
+    description: |
+      tristate, request/disable 2.4 Vpp operating mode. The values are:
+      0: Disable 2.4 Vpp operating mode.
+      1: Request 2.4 Vpp operating mode from link partner.
+      Absence of this property will leave configuration to default values.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    enum: [0, 1]
+
   broken-turn-around:
     $ref: /schemas/types.yaml#/definitions/flag
     description:
-- 
2.25.1

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