linux-kernel - Re: [PATCH v2] net: fec: fix conversion to gpiod API

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Message-ID: <Y9qprbyr/0sa3sBN@lunn.ch>
Date:   Wed, 1 Feb 2023 19:04:29 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Wei Fang <wei.fang@....com>, Jakub Kicinski <kuba@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        NXP Linux Team <linux-imx@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: fec: fix conversion to gpiod API

On Tue, Jan 31, 2023 at 07:23:16PM -0800, Dmitry Torokhov wrote:
> The reset line is optional, so we should be using devm_gpiod_get_optional()
> and not abort probing if it is not available. Also, there is a quirk in
> gpiolib (introduced in b02c85c9458cdd15e2c43413d7d2541a468cde57) that
> transparently handles "phy-reset-active-high" property. Remove handling
> from the driver to avoid ending up with the double inversion/flipped
> logic.
> 
> Fixes: 468ba54bd616 ("fec: convert to gpio descriptor")
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

Please split this into two:

1) Fix for it being optional
2) Removing support for phy-reset-active-high

The breakage is in net-next, so we are not in a rush, and we don't
need a minimum of patches. So since this is two logical changes, it
should be two patches.

Please also update the binding document to indicate that
'phy-reset-active-high' is no longer deprecated, it has actually been
removed. So we want the DT checking tools to error out if such a
property is found.

Thanks
	Andrew