Re: [RFC next v1 3/5] net: stmmac: use GPIO descriptors in stmmac_mdio_reset

From: Linus Walleij
Date: Sun Jun 09 2019 - 17:54:57 EST

On Sun, Jun 9, 2019 at 8:06 PM Martin Blumenstingl
<martin.blumenstingl@xxxxxxxxxxxxxx> wrote:

> 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>

This is in line with how I want the gpiolib to just swallow all quirks,
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Linus Walleij