[U-Boot] [PATCH v2] usb: ehci: Fix test mode for connected ports

[Simon Glass]

On Tue, Sep 24, 2013 at 11:53 AM, Julius Werner <jwerner at chromium.org> wrote:
> The EHCI controller has some very specific requirements for the USB 2.0
> port test modes, which were not closely followed in the initial test
> mode commit. It demands that the host controller is completely shut down
> (all ports suspended, Run/Stop bit unset) when activating test mode, and
> will not work on an already enumerated port.
>
> This patch fixes that by introducing a new ehci_shutdown() function that
> closely follows the procedure listed in EHCI 4.14. Also, when we have
> such a function anyway, we might as well also use it in
> usb_lowlevel_stop() to make the normal host controller shutdown cleaner.
>
> Signed-off-by: Julius Werner <jwerner at chromium.org>

Acked-by: Simon Glass <sjg at chromium.org>