linux-kernel - Re: [PATCH v2 1/2] dt-bindings: can: fsl,flexcan: add transceiver capabilities

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Message-ID: <20250220-underfed-taekwondo-22c1d4f4eea9@spud>
Date: Thu, 20 Feb 2025 17:20:35 +0000
From: Conor Dooley <conor@...nel.org>
To: Marc Kleine-Budde <mkl@...gutronix.de>
Cc: Dimitri Fedrau <dima.fedrau@...il.com>,
	Dimitri Fedrau via B4 Relay <devnull+dimitri.fedrau.liebherr.com@...nel.org>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-can@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	Dimitri Fedrau <dimitri.fedrau@...bherr.com>,
	Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: can: fsl,flexcan: add transceiver
 capabilities

On Thu, Feb 20, 2025 at 05:02:56PM +0100, Marc Kleine-Budde wrote:
> On 20.02.2025 16:56:42, Dimitri Fedrau wrote:
> > Am Thu, Feb 20, 2025 at 09:44:50AM +0100 schrieb Marc Kleine-Budde:
> > > On 20.02.2025 09:22:10, Dimitri Fedrau via B4 Relay wrote:
> > > > From: Dimitri Fedrau <dimitri.fedrau@...bherr.com>
> > > > 
> > > > Currently the flexcan driver does only support adding PHYs by using the
> > > > "old" regulator bindings. Add support for CAN transceivers as a PHY.
> > > > 
> > > > Acked-by: Conor Dooley <conor.dooley@...rochip.com>
> > > > Signed-off-by: Dimitri Fedrau <dimitri.fedrau@...bherr.com>
> > > 
> > > Is it possible express in the biding that we either want to have
> > > xceiver-supply or phys?
> > >
> > I didn't found anything to express that in the binding.
> 
> What about something like this:
> 
> | dependencies:
> |   prop-a: ["!prop-b"]
> |   prop-b: ["!prop-a"]

  # the internal reference buffer always requires high-z mode
  - if:
      required:
        - refin-supply
    then:
      properties:
        adi,no-ref-high-z: false

Do it like so ;)

Cheers,
Conor.

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