netdev - Re: [PATCH net-next v2 1/1] net: stmmac: use GPIO descriptors in stmmac_mdio

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Date:   Fri, 14 Jun 2019 19:08:53 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     martin.blumenstingl@...glemail.com
Cc:     netdev@...r.kernel.org, peppe.cavallaro@...com,
        alexandre.torgue@...com, joabreu@...opsys.com, andrew@...n.ch,
        linus.walleij@...aro.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        maxime.ripard@...tlin.com
Subject: Re: [PATCH net-next v2 1/1] net: stmmac: use GPIO descriptors in
 stmmac_mdio_reset

From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Date: Wed, 12 Jun 2019 21:31:15 +0200

> Switch stmmac_mdio_reset to use GPIO descriptors. GPIO core handles the
> "snps,reset-gpio" for GPIO descriptors so we don't need to take care of
> it inside the driver anymore.
> 
> The advantage of this is that we now preserve the GPIO flags which are
> passed via devicetree. This is required on some newer Amlogic boards
> which use an Open Drain pin for the reset GPIO. This pin can only output
> a LOW signal or switch to input mode but it cannot output a HIGH signal.
> There are already devicetree bindings for these special cases and GPIO
> core already takes care of them but only if we use GPIO descriptors
> instead of GPIO numbers.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Applied.