ARM: tegra: Workaround UDC boot issues only if necessary

Resetting the USB device controller on boot is only necessary if the SoC
actually has a UDC controller and U-Boot enables support for it. All the
Tegra boards support UDC via the ChipIdea UDC driver, so make the UDC on
boot workaround depend on the ChipIdea UDC driver.

This prevents a crash on Tegra186 which does not have the ChipIdea UDC.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 28914a34a1b5456b97923a29d1b1dee3614c2bdf..faa73559fd426dc7868b44573f019dd6123454a0 100644 (file)
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -148,6 +148,7 @@ endchoice
 
 config TEGRA_DISCONNECT_UDC_ON_BOOT
        bool "Disconnect USB device mode controller on boot"
+       depends on CI_UDC
        default y
        help
          When loading U-Boot into RAM over USB protocols using tools such as