linux-kernel - [PATCH 1/3] dt-bindings: net: dp83826: add ti,cfg-dac-minus binding

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Date: Thu, 11 Jan 2024 17:19:25 +0100
From: Catalin Popescu <catalin.popescu@...ca-geosystems.com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	afd@...com,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk
Cc: netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Catalin Popescu <catalin.popescu@...ca-geosystems.com>
Subject: [PATCH 1/3] dt-bindings: net: dp83826: add ti,cfg-dac-minus binding

Add property ti,cfg-dac-minus to allow for voltage tuning
of logical level -1 of the MLT-3 encoded data.

Signed-off-by: Catalin Popescu <catalin.popescu@...ca-geosystems.com>
---
 Documentation/devicetree/bindings/net/ti,dp83822.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ti,dp83822.yaml b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
index db74474207ed..2f010333be49 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83822.yaml
+++ b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
@@ -62,6 +62,15 @@ properties:
        for the PHY.  The internal delay for the PHY is fixed to 3.5ns relative
        to transmit data.
 
+  ti,cfg-dac-minus:
+    description: |
+       DP83826 PHY only.
+       Sets the voltage ratio of the logical level -1 for the MLT-3 encoded data.
+       0 = 50%, 1 = 56.25%, 2 = 62.50%, 3 = 68.75%, 4 = 75%, 5 = 81.25%, 6 = 87.50%,
+       7 = 93.75%, 8 = 100%, 9 = 106.25%, 10 = 112.50%, 11 = 118.75%, 12 = 125%,
+       13 = 131.25%, 14 = 137.50%, 15 = 143.75%, 16 = 150%.
+    enum: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]
+
 required:
   - reg
 
-- 
2.34.1