On 26 January 2016 at 10:59, Stephen Warren swarren@wwwdotorg.org wrote:
From: Stephen Warren swarren@nvidia.com
When loading U-Boot into RAM over USB protocols using tools such as tegrarcm or L4T's exec-uboot.sh/tegraflash.py, Tegra's USB device mode controller is initialized and enumerated by the host PC running the tool. Unfortunately, these tools do not shut down the USB controller before executing the downloaded code, and so the host PC does not "de-enumerate" the USB device. This patch implements optional code to shut down the USB controller when U-Boot boots to avoid leaving a stale USB device present.
Signed-off-by: Stephen Warren swarren@nvidia.com
This patch needs to be applied along with the next patch in this series, likely in u-boot-dm since that patch modifies test code that's only currently present in u-boot-dm.
arch/arm/mach-tegra/Kconfig | 13 +++++++++++++ arch/arm/mach-tegra/board2.c | 10 +++++++++- 2 files changed, 22 insertions(+), 1 deletion(-)
Reviewed-by: Simon Glass sjg@chromium.org