[PATCH v7 3/5] usb: dwc2: add generic PHY framework support for dwc2 usb controler platform driver.

Felipe Balbi balbi at ti.com
Tue Jan 13 07:30:41 PST 2015

On Tue, Jan 13, 2015 at 10:35:52AM +0100, Robert Jarzmik wrote:
> Paul Zimmerman <Paul.Zimmerman at synopsys.com> writes:
> > The patch below fixes it. And it seems like the right thing to me,
> > since GPIOs should be optional for a generic phy, I would think. But
> > my device tree foo is very weak, so I'm not sure.
> >
> > CCing Robert, who touched the generic phy code last. Robert, what do
> > you think?
> I think your patch in [1] is correct, because
> "Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt" states that
> reset-gpios is optional, and because Felipe told me gpios for phy_generic are
> optional.
> Now the original code was written by Felipe, so better ask him first. The
> original code was :
> af9f51c55 phy-generic.c nop->gpio_reset = of_get_named_gpio_flags(node, "reset-gpios",
> af9f51c55 phy-generic.c                                                 0, &flags);
> af9f51c55 phy-generic.c if (nop->gpio_reset == -EPROBE_DEFER)
> af9f51c55 phy-generic.c         return -EPROBE_DEFER;

yeah, at the time that was written, there was no _optional() varianto of
get_gpio, if there is one now, we should use it, indeed.

I can rather easily test here on BBB to make sure there are no

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