linux-kernel - Re: [net-next PATCH v5 5/9] dt-bindings: net: add QCA807x PHY defines

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Date: Fri, 2 Feb 2024 18:03:16 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: Conor Dooley <conor@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	"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>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Frank Rowand <frowand.list@...il.com>,
	Robert Marko <robert.marko@...tura.hr>, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [net-next PATCH v5 5/9] dt-bindings: net: add QCA807x PHY defines

On Fri, Feb 02, 2024 at 04:58:32PM +0000, Conor Dooley wrote:
> On Fri, Feb 02, 2024 at 04:19:15PM +0100, Christian Marangi wrote:
> > On Fri, Feb 02, 2024 at 08:41:56AM +0100, Krzysztof Kozlowski wrote:
> > > On 01/02/2024 16:17, Christian Marangi wrote:
> > > > From: Robert Marko <robert.marko@...tura.hr>
> > > > 
> > > > Add DT bindings defined for Qualcomm QCA807x PHY series related to
> > > > calibration and DAC settings.
> > > 
> > > Nothing from this file is used and your commit msg does not provide
> > > rationale "why", thus it does not look like something for bindings.
> > > Otherwise please point me which patch with *driver* uses these bindings.
> > >
> > 
> > Hi, since I have to squash this, I will include the reason in the schema
> > patch.
> > 
> > Anyway these are raw values used to configure the qcom,control-dac
> > property.
> 
> Maybe I am missing something, but a quick scan of the patchset and a
> grep of the tree doesn't show this property being documented anywhere.
> 
> > In the driver it's used by qca807x_config_init. We read what is set in
> > DT and we configure the reg accordingly.
> > 
> > If this is wrong should we use a more schema friendly approach with
> > declaring an enum of string and document that there?
> 
> Without any idea of what that property is used for it is hard to say,
> but personally I much prefer enums of strings for what looks like a
> property that holds register values.
> 
> That you felt it necessary to add defines for the values makes it more
> like that that is the case.
>

Ok, no problem. The big idea here was really to skip having to have a
big function that parse strings but I get that it's better handle with
string and have them documented directly in the yaml.

> > 
> > > > 
> > > > Signed-off-by: Robert Marko <robert.marko@...tura.hr>
> > > > Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> > > > ---
> > > >  include/dt-bindings/net/qcom-qca807x.h | 30 ++++++++++++++++++++++++++
> > > 
> > > Use filename matching compatible, so vendor,device. No wildcards, unless
> > > your compatible also has them.
> > > 
> > > >  1 file changed, 30 insertions(+)
> > > >  create mode 100644 include/dt-bindings/net/qcom-qca807x.h
> > > > 
> > > 
> > > 
> > > 
> > > Best regards,
> > > Krzysztof
> > > 
> > 
> > -- 
> > 	Ansuel



-- 
	Ansuel