Hi all, I've worked on adding PM runtime support on the DAVINCI's USB PHY controller. It revealed some bugs in the MUSB controller that I fixed in the last three patches. The platform I work on uses the MUSB controller in HOST-only mode and has been designed to save as much energy as possible. To do so, the USB's VBUS supply can be cut off by toggling a GPIO, this triggers the bug fixed by patch 2. If an USB stick gets unplugged, then plugged back while the PHY is in suspend state, a BABBLE error happens. This BABBLE can't be recovered. This is fixed by last patch. Bastien Curutchet (4): phy: ti: phy-da8xx-usb: Add runtime PM support Revert "usb: musb: da8xx: Set phy in OTG mode by default" usb: musb: da8xx: Remove try_idle implementation from host-only mode usb: musb: da8xx: Implement BABBLE recovery drivers/phy/ti/phy-da8xx-usb.c | 49 ++++++++++++++++++++++++++++++++++ drivers/usb/musb/da8xx.c | 20 ++++++++------ 2 files changed, 61 insertions(+), 8 deletions(-) -- 2.44.0
