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From: Catalin Popescu <catalin.popescu@leica-geosystems.com>
To: davem@davemloft.net,
	kuba@kernel.org,
	pabeni@redhat.com,
	robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org,
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	Catalin Popescu <catalin.popescu@leica-geosystems.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH v4 1/2] dt-bindings: net: dp83826: support TX data voltage tuning
Date: Mon, 12 Feb 2024 08:46:48 +0100
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Add properties ti,cfg-dac-minus-one-bp/ti,cfg-dac-plus-one-bp
to support voltage tuning of logical levels -1/+1 of the MLT-3
encoded TX data.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Catalin Popescu <catalin.popescu@leica-geosystems.com>
---
Changes in v2:
 - squash the 2 DT bindings patches in one single patch
 - drop redundant "binding" from the DT bindings patch title
 - rename DT properties and define them as percentage
 - add default value for each new DT property

Changes in v3:
 - rename properties to "-bp" and change their admissible values
   accordingly

Changes in v4:
 - add reviewed-by tag
---
 .../devicetree/bindings/net/ti,dp83822.yaml    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/ti,dp83822.yaml b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
index db74474207ed..8f4350be689c 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83822.yaml
+++ b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
@@ -62,6 +62,24 @@ properties:
        for the PHY.  The internal delay for the PHY is fixed to 3.5ns relative
        to transmit data.
 
+  ti,cfg-dac-minus-one-bp:
+    description: |
+       DP83826 PHY only.
+       Sets the voltage ratio (with respect to the nominal value)
+       of the logical level -1 for the MLT-3 encoded TX data.
+    enum: [5000, 5625, 6250, 6875, 7500, 8125, 8750, 9375, 10000,
+           10625, 11250, 11875, 12500, 13125, 13750, 14375, 15000]
+    default: 10000
+
+  ti,cfg-dac-plus-one-bp:
+    description: |
+       DP83826 PHY only.
+       Sets the voltage ratio (with respect to the nominal value)
+       of the logical level +1 for the MLT-3 encoded TX data.
+    enum: [5000, 5625, 6250, 6875, 7500, 8125, 8750, 9375, 10000,
+           10625, 11250, 11875, 12500, 13125, 13750, 14375, 15000]
+    default: 10000
+
 required:
   - reg
 

base-commit: 1f719a2f3fa67665578c759ac34fd3d3690c1a20
prerequisite-patch-id: 0000000000000000000000000000000000000000
-- 
2.34.1