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From: Bastien Curutchet <bastien.curutchet@bootlin.com>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Bin Liu <b-liu@ti.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-phy@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	herve.codina@bootlin.com,
	christophercordahi@nanometrics.ca,
	Bastien Curutchet <bastien.curutchet@bootlin.com>
Subject: [PATCH 0/4] usb: davinci: Add PM runtime support and improve HOST only mode support
Date: Tue, 28 May 2024 12:20:22 +0200
Message-ID: <20240528102026.40136-1-bastien.curutchet@bootlin.com>
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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