Re: [PATCH] USB: host: tegra: CONFIG_USB_EHCI_TEGRA requires ULPI and ULPI viewport support

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On 10/04/2013 09:04 AM, Stephen Warren wrote:
On 10/04/2013 12:02 AM, Paul Walmsley wrote:
Selecting CONFIG_USB_EHCI_TEGRA requires CONFIG_USB_ULPI_VIEWPORT.
Otherwise the build can break with:

drivers/usb/phy/phy-tegra-usb.c: In function 'ulpi_open':
drivers/usb/phy/phy-tegra-usb.c:689:31: error:
'ulpi_viewport_access_ops' undeclared (first use in this function)
drivers/usb/phy/phy-tegra-usb.c:689:31: note: each undeclared identifier
is reported only once for each function it appears in

if CONFIG_USB_ULPI_VIEWPORT is not manually selected.

Fix by forcing CONFIG_USB_ULPI_VIEWPORT to be selected when
CONFIG_USB_EHCI_TEGRA is selected.  Then, since CONFIG_USB_ULPI_VIEWPORT
requires CONFIG_USB_ULPI to be selected, add that too.

N.B.: ULPI is deprecated on this controller for T114, so it might make
sense to split the ULPI support code into a separate file, compiled only
if a ULPI PHY is selected.
This was fixed at least in 3.13 (perhaps 3.12 too?) by:

config ARCH_TEGRA
...
         select USB_ARCH_HAS_EHCI if USB_SUPPORT
         select USB_ULPI if USB_PHY
         select USB_ULPI_VIEWPORT if USB_PHY

I think it'd be better to back-port that patch to stable, for consistency.

Yep agreed. Want to cc that patch to linux-stable instead? The v3.13.x -stable builds are breaking here for T114-only Kconfigs...



- Paul
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