linux-kernel - Re: [PATCH 0/4] usb: dwc3: Add dual-role support using OTG core

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Date:   Thu, 15 Feb 2018 09:43:41 +0200
From:   Roger Quadros <rogerq@...com>
To:     <balbi@...nel.org>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/4] usb: dwc3: Add dual-role support using OTG core

Hi Felipe,

On 22/01/18 15:11, Roger Quadros wrote:
> 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.

Any comments on this series?

> 
> This series depends on [1] and [2]
> 
> [1] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98771.html
> 
> [2] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98848.html
> 
> Roger Quadros (4):
>   usb: dwc3: prevent setting PRTCAP to OTG from debugfs
>   usb: dwc3: core.h: add some register definitions
>   usb: dwc3: add dual role support using OTG block
>   ARM: dts: am43xx: Enable dual-role mode for USB1
> 
>  arch/arm/boot/dts/am437x-gp-evm.dts  |   2 +-
>  arch/arm/boot/dts/am437x-sk-evm.dts  |   2 +-
>  arch/arm/boot/dts/am43x-epos-evm.dts |   2 +-
>  drivers/usb/dwc3/core.c              |  70 ++++-
>  drivers/usb/dwc3/core.h              | 111 ++++++++
>  drivers/usb/dwc3/drd.c               | 492 +++++++++++++++++++++++++++++++++--
>  6 files changed, 650 insertions(+), 29 deletions(-)
> 

-- 
cheers,
-roger

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