mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-11 18:35:28 +00:00
f8e9a694f2
We had disabled wakeups on the AP phy when we were running on gru, because the AP phy was not in use. We never changed that for reef, so UTMI wakeups were disabled even when the AP USB was supposed to be enabled. After Cr50 went to sleep any usb transactions would drop bits, because Cr50 wouldn't notice anything was happening until it woke up on one of the HOOK_TICK events. This change reenables UTMI wakeups on boards with AP usb. It writes 1 to USB_PCGCCTL_STOPCLK. This makes the controller disable the PHY clock whenever it detects a usb suspend. When it resumes out of suspend, this bit has no effect. BUG=b:35774906 BRANCH=cr50 TEST=Boot up reef. Wait until cr50 goes to sleep run 'usb_updater -f' and verify that it runs successfully. Make sure deep sleep still works Change-Id: I54bd866111b5c9b5738575f23757e0cbe4907ec4 Signed-off-by: Mary Ruthven <mruthven@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/448988 Reviewed-by: Aseda Aboagye <aaboagye@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly