linux-kernel - [PATCH v2 0/4] usb: phy: generic: Support enabling/disabling VBUS

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Date:   Mon, 25 Apr 2022 13:14:07 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org
Cc:     Mike Looijmans <mike.looijmans@...ic.nl>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jules Maselbas <jmaselbas@...ray.eu>,
        Felipe Balbi <balbi@...nel.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-kernel@...r.kernel.org,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Sean Anderson <sean.anderson@...o.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH v2 0/4] usb: phy: generic: Support enabling/disabling VBUS

The generic USB phy has had VBUS-related code for a long time, but it
has always been broken, since the regulator was never gotten from the
device tree. However, the support itself seems not very useful, since
e.g.  usb_phy_vbus_on/off has no users and usb_phy_set_power is only
used by gadgets to make sure they don't draw too much current. Instead,
use the VBUS regulator to implement otg_set_vbus, which is called from
several drivers. This results in a change in semantics of VBUS, but
since support was always broken I don't think this will have any affect.

This got no (non-automated) feedback for an entire release cycle. I'm
sending v2 with a wider CC list so hopefully someone can review it in
time for 5.19.

Changes in v2:
- Fix dt_binding_check errors

Sean Anderson (4):
  dt-bindings: usb: usb-nop-xceiv: Repurpose vbus-regulator
  usb: phy: generic: Get the vbus supply
  usb: phy: generic: Implement otg->set_vbus
  usb: phy: generic: Disable vbus on removal

 .../bindings/usb/usb-nop-xceiv.yaml           |  9 ++-
 drivers/usb/phy/phy-generic.c                 | 55 +++++++++----------
 2 files changed, 31 insertions(+), 33 deletions(-)

-- 
2.35.1.1320.gc452695387.dirty