From: Andrew Lunn <andrew@lunn.ch>
To: LABBE Corentin <clabbe@baylibre.com>
Cc: Rob Herring <robh@kernel.org>,
hkallweit1@gmail.com, linux@armlinux.org.uk,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH v3] dt-bindings: net: Convert mdio-gpio to yaml
Date: Mon, 3 May 2021 14:14:19 +0200 [thread overview]
Message-ID: <YI/pG3GSIpse+OEo@lunn.ch> (raw)
In-Reply-To: <YI+WPRAAbtmP9LC0@Red>
> > What's the order with 3 lines? In any case, define the order with
> > schema:
> >
> > minItems:
> > items:
> > - description: MDC signal
> > - description: MDIO or ?? signal
> > - description: ?? signal
> >
>
> I dont know what to write in the third line, I added the "maxItems: 3" by request of Andrew Lunn.
> But I have no example at hand.
>
> Andrew could you give me an example of: "You often find with x86 machines you don't have GPIOs, just GPI
> and GPO, and you need to combine two to form the MDIO line of the MDIO bus."
> Or could I drop the "maxItems: 3" until a board need it.
The code gets the GPIOs via index. The index are defined in
include/linux/gpio-mdio.h as:
#define MDIO_GPIO_MDC 0
#define MDIO_GPIO_MDIO 1
#define MDIO_GPIO_MDO 2
So you can describe them MDC, MDIO, MDO.
Andrew
prev parent reply other threads:[~2021-05-03 12:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 18:29 [PATCH v3] dt-bindings: net: Convert mdio-gpio to yaml Corentin Labbe
2021-04-30 21:53 ` Rob Herring
2021-05-03 6:20 ` LABBE Corentin
2021-05-03 12:14 ` Andrew Lunn [this message]
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