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

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Message-ID: <5f57479b-59e8-458b-a19c-8306fbfe8ff7@lunn.ch>
Date: Thu, 11 Jan 2024 17:47:50 +0100
From: Andrew Lunn <andrew@...n.ch>
To: POPESCU Catalin <catalin.popescu@...ca-geosystems.com>
Cc: "davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	"kuba@...nel.org" <kuba@...nel.org>,
	"pabeni@...hat.com" <pabeni@...hat.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"conor+dt@...nel.org" <conor+dt@...nel.org>,
	"afd@...com" <afd@...com>,
	"hkallweit1@...il.com" <hkallweit1@...il.com>,
	"linux@...linux.org.uk" <linux@...linux.org.uk>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	GEO-CHHER-bsp-development <bsp-development.geo@...ca-geosystems.com>
Subject: Re: [PATCH 1/3] dt-bindings: net: dp83826: add ti,cfg-dac-minus
 binding

> These are not raw register values and these are not voltage values but 
> voltage ratios. I'm mapping the voltage ratios to enum values [0-16] 
> which are converted to register raw values by the driver. I don't see a 
> better way to do this.

I assume 802.3 states what the actual voltage should be? So you can
calculate what 50% of that is?

	  Andrew