linux-kernel - [PATCH v2 0/2] usb: dwc3: Add dual-role support using OTG core

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Date:   Tue, 27 Feb 2018 13:29:10 +0200
From:   Roger Quadros <rogerq@...com>
To:     <balbi@...nel.org>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Roger Quadros <rogerq@...com>
Subject: [PATCH v2 0/2] usb: dwc3: Add dual-role support using OTG core

Hi Felipe,

Some platforms (e.g. TI's AM437x) don't have USB ID pin state available
over GPIO/extcon but need to rely on the DWC3 core's OTG block to
get the ID pin state instead.

This series implements simple dual-role functionality using DWC3's OTG block.
Debugfs 'mode' override is also functional so user can switch
between "otg", "host" or "device" modes for debug.

Although system suspend/resume isn't working yet in mainline for AM437x,
I've tested this series for system suspend/resume using a local tree.

Roger Quadros (2):
  usb: dwc3: core.h: add some register definitions
  usb: dwc3: add dual role support using OTG block

 drivers/usb/dwc3/core.c |  67 ++++++-
 drivers/usb/dwc3/core.h | 111 +++++++++++
 drivers/usb/dwc3/drd.c  | 489 ++++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 639 insertions(+), 28 deletions(-)

-- 
cheers,
-roger

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