• Douglas Anderson's avatar
    USB: dwc2: Don't turn off the usbphy in suspend if wakeup is enabled · c846b03f
    Douglas Anderson authored
    If the 'snps,need-phy-for-wake' is set in the device tree then:
    
    - We know that we can wakeup, so call device_set_wakeup_capable().
      The USB core will use this knowledge to enable wakeup by default.
    - We know that we should keep the PHY on during suspend if something
      on our root hub needs remote wakeup.  This requires the patch (USB:
      Export usb_wakeup_enabled_descendants()).  Note that we don't keep
      the PHY on at suspend time if it's not needed because it would be a
      power draw.
    
    If we later find some users of dwc2 that can support wakeup without
    keeping the PHY on we may want to add a way to call
    device_set_wakeup_capable() without keeping the PHY on at suspend
    time.
    Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
    Signed-off-by: default avatarChris Zhong <zyw@rock-chips.com>
    Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
    c846b03f
core.h 59.5 KB