Re: [PATCH RFT 2/2] macb: kill PHY reset code

[Sergei Shtylyov]

Hello.

On 04/11/2016 05:28 AM, Andrew Lunn wrote:

> > With  the 'phylib' now  being aware of  the "reset-gpios" PHY node property,
> > there should be no need to frob the PHY reset in this  driver anymore...
> >
> > Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> >
> > ---
> >   drivers/net/ethernet/cadence/macb.c |   17 -----------------
> >   drivers/net/ethernet/cadence/macb.h |    1 -
> >   2 files changed, 18 deletions(-)
> >
> > Index: net-next/drivers/net/ethernet/cadence/macb.c
> > ===================================================================
> > --- net-next.orig/drivers/net/ethernet/cadence/macb.c
> > +++ net-next/drivers/net/ethernet/cadence/macb.c
[...]
> > @@ -2977,18 +2976,6 @@ static int macb_probe(struct platform_de
> >   	else
> >   		macb_get_hwaddr(bp);
> >
> > -	/* Power up the PHY if there is a GPIO reset */
> > -	phy_node =  of_get_next_available_child(np, NULL);
> > -	if (phy_node) {
> > -		int gpio = of_get_named_gpio(phy_node, "reset-gpios", 0);
> > -
> > -		if (gpio_is_valid(gpio)) {
> > -			bp->reset_gpio = gpio_to_desc(gpio);
> > -			gpiod_direction_output(bp->reset_gpio, 1);
>
> Hi Sergei
>
> The code you are deleting would of ignored the flags in the gpio
> property, i.e. active low.

   Hm, you're right -- I forgot about that... :-/

> The new code in the previous patch does
> however take the flags into account. Did you check if there are any
> device trees which have flags, which were never used, but are now
> going to be used and thus break...

   Checked this now and found out arch/arm/boot/dts/ar91-vinco.dts. Looks 
like it needs to be fixed indeed...

>        Andrew

MBR, Sergei