linux-kernel - [PATCH v5 0/3] dwc3 prereqs for HiKey960 USB support

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Message-Id: <20191108011723.32390-1-john.stultz@linaro.org>
Date:   Fri,  8 Nov 2019 01:17:20 +0000
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        ShuFan Lee <shufan_lee@...htek.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Yu Chen <chenyu56@...wei.com>, Felipe Balbi <balbi@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Jun Li <lijun.kernel@...il.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Jack Pham <jackp@...eaurora.org>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH v5 0/3] dwc3 prereqs for HiKey960 USB support

Just another round here trying to push forward a patch series
submitted previously by Yu Chen to get HiKey960 dev-board's USB
functionality working.

This set is even more narrowly focused on just the role-switch
support and adding the role-switch-default-mode option (as the
core extension/glue bindings bits are still in discussion).

While Felipe had quite a bit of feedback on the last round, and
I'm not completely sure how to address all of it yet, I wanted
to send out this set which tries to address *some* of his
concerns, so I could get further feedback and make sure I'm on
the right track.

The current version of the full patchset to enable USB on
HiKey960 can be found here:
  https://git.linaro.org/people/john.stultz/android-dev.git/log/?id=d40d8c803c5a79b70e2a6b363fe03442480df7d9

I'd greatly appreciate any feedback or thoughts!

thanks
-john

New in v5:
* Just sending out role-switch and role-swith-default-mode
  changes
* Reworked role-switch code to not select CONFIG_USB_ROLE_SWITCH
  and to ifdef out the dependent code if its not enabled, as
  suggested by Felipe
* Changed to a string based role-switch-default-mode binding
  as suggested by Felipe


Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
CC: ShuFan Lee <shufan_lee@...htek.com>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Suzuki K Poulose <suzuki.poulose@....com>
Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: Yu Chen <chenyu56@...wei.com>
Cc: Felipe Balbi <balbi@...nel.org>
Cc: Hans de Goede <hdegoede@...hat.com>
Cc: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Jun Li <lijun.kernel@...il.com>
Cc: Valentin Schneider <valentin.schneider@....com>
Cc: Jack Pham <jackp@...eaurora.org>
Cc: linux-usb@...r.kernel.org
Cc: devicetree@...r.kernel.org

John Stultz (2):
  dt-bindings: usb: generic: Add role-switch-default-mode binding
  usb: dwc3: Add support for role-switch-default-mode binding

Yu Chen (1):
  usb: dwc3: Registering a role switch in the DRD code.

 .../devicetree/bindings/usb/generic.txt       |  6 ++
 drivers/usb/dwc3/core.h                       |  6 ++
 drivers/usb/dwc3/drd.c                        | 96 ++++++++++++++++++-
 3 files changed, 107 insertions(+), 1 deletion(-)

-- 
2.17.1