Re: Correct place for USB PHY driver
From: Arnd Bergmann
Date: Mon Jan 11 2016 - 08:55:45 EST
On Monday 11 January 2016 12:56:27 Mason wrote:
> On 11/01/2016 11:28, Kishon Vijay Abraham I wrote:
> > On Monday 11 January 2016 03:37 PM, Mason wrote:
> >> I have a board with a Chipidea controller.
> >> I use a custom PHY driver for it.
> >> Should the PHY driver live in drivers/phy or in drivers/usb/phy ?
> > All new phy drivers should be in drivers/phy using the generic PHY framework.
> >> I was playing with a modular build and hit this problem:
> >> ERROR: "of_usb_get_phy_mode" [drivers/usb/chipidea/ci_hdrc.ko] undefined!
> >> I'm currently using v4.1.13 and I saw that Arnd fixed something related
> >> probably in a later version:
> >> http://thread.gmane.org/gmane.linux.ports.arm.kernel/457561
> >> Was this patch accepted upstream?
> > I think no.
> The driver I use is in drivers/phy and my config has
> # CONFIG_USB_PHY is not set
> But I do hit the "of_usb_get_phy_mode undefined" error when I
> set all of USB to m.
> Arnd, do you think your patch needs to be carried over to generic PHY?
I think my patch is still needed, I will resubmit it if it doesn't make
it into 4.5-rc1.
In the meantime you can work around the problem by setting CONFIG_USB=y
instead of CONFIG_USB=m.