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

From: David Miller
Date: Fri Jun 14 2019 - 22:13:48 EST


From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxx>
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Applied.