linux-kernel - [PATCH 0/2] USB: dwc3: get extcon device by OF graph bindings

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Date:   Wed, 31 Jan 2018 16:57:16 +0100
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     linux-usb@...r.kernel.org (open list:DESIGNWARE USB3 DRD IP DRIVER)
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS), Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Inki Dae <inki.dae@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: [PATCH 0/2] USB: dwc3: get extcon device by OF graph bindings

Hi,

This small patchset tries to address issue with broken DT extcon property
in case of USB controller - DWC3. It exposes similar problem as in proposed
USB connector bindings[1] - extcon device is required by devices not always
connected directly to extcon device. Here we have:
DWC3 -> USB-PHY -> MUIC -> USB-connector
                               ^
MHL-bridge---------------------^

More details and proposition of generic solution in first patch 

[1]: https://marc.info/?i=20180131134435.12216-1-a.hajda%40samsung.com

Regards
Andrzej


Andrzej Hajda (2):
  USB: dwc3: get extcon device by OF graph bindings
  arm64: dts: exynos: add OF graph between USB-PHY and MUIC

 .../boot/dts/exynos/exynos5433-tm2-common.dtsi     | 18 +++++++++-
 drivers/usb/dwc3/drd.c                             | 41 +++++++++++++++-------
 2 files changed, 45 insertions(+), 14 deletions(-)

-- 
2.15.1