linux-kernel - Re: [PATCH v4 2/3] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY binding

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Message-ID: <20240510-daisy-overkill-99c4bee476c0@spud>
Date: Fri, 10 May 2024 16:52:22 +0100
From: Conor Dooley <conor@...nel.org>
To: Rob Herring <robh@...nel.org>
Cc: Richard Zhu <hongxing.zhu@....com>, vkoul@...nel.org, kishon@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, frank.li@....com,
	conor+dt@...nel.org, linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, kernel@...gutronix.de,
	imx@...ts.linux.dev
Subject: Re: [PATCH v4 2/3] dt-bindings: phy: Add i.MX8Q HSIO SerDes PHY
 binding

On Fri, May 10, 2024 at 10:38:49AM -0500, Rob Herring wrote:
> On Thu, May 09, 2024 at 01:56:20PM +0800, Richard Zhu wrote:
> > +  fsl,refclk-pad-mode:
> > +    description:
> > +      Specifies the mode of the refclk pad used. INPUT(PHY refclock is
> > +      provided externally via the refclk pad) or OUTPUT(PHY refclock is
> > +      derived from SoC internal source and provided on the refclk pad).
> > +    $ref: /schemas/types.yaml#/definitions/string
> > +    enum: [ "input", "output" ]
> 
> default?
> 
> Really, this could just be a boolean for the non-default mode.

There's actually a third option, or at least there was in v1, unused.
The description in v1 was:

      It can be UNUSED(PHY
      refclock is derived from SoC internal source), INPUT(PHY refclock
      is provided externally via the refclk pad) or OUTPUT(PHY refclock
      is derived from SoC internal source and provided on the refclk pad).

I suggested that there should be 3 strings and not having the property
would mean unused. But all mention of unused seems to have vanished :/

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