21.10.2021 22:14, Alan Stern пишет: ... >>> Should USB keyboard be able to wake up every HC or it's a >>> machine-specific feature? >> >> I mean whether key press should wake up HC if wake-up is enabled for the >> keyboard device. > > Yes, it should. More specifically, if the keyboard is capable of > generating wakeup requests, and wakeup is enabled for both the keyboard > device and the HC, then the keyboard should be able to wake up the > system from suspend. Some HCs or systems might not support this > capability, however. > >>> I'm asking because wakeup works on a typical >>> Intel hardware, but doesn't work on older Tegra SoCs that use Chipidea >>> controller. It's not obvious to me whether this is something that >>> firmware handles for Intel or it's broken on Tegra. Could you please >>> clarify? If it should work for every HC, then I may try to take a closer >>> look. > > If the hardware/firmware can support it then it should work. I don't > know what's going on with your older Tegra SoCs; it's possible there is > a bug in the driver. I'll take a closer look then, thank you.
