From: "Claus H. Stovgaard" <cst@phaseone.com>
To: <linux-usb@vger.kernel.org>
Cc: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
<linux-kernel@vger.kernel.org>,
"Anurag Kumar Vulisha" <anurag.kumar.vulisha@xilinx.com>
Subject: Re: [PATCH] usb: gadget: configfs: Add lpm_Ux_disable
Date: Tue, 7 May 2019 11:37:10 +0200 [thread overview]
Message-ID: <1557221830.114189.8.camel@phaseone.com> (raw)
In-Reply-To: <1557220655-123090-1-git-send-email-cst@phaseone.com>
On Tue, 2019-05-07 at 11:09 +0200, Claus H. Stovgaard wrote:
> When combining dwc3 with an redriver for a USB Type-C device
> solution, it
> sometimes have problems with leaving U1/U2 for certain hosts,
> resulting in
> link training errors and reconnects. This create an interface via
> configfs for disabling U1/U2, enabling a workaround for devices based
> on
> dwc3.
>
Sorry messed up a bit with a missing cover letter.
This feature relates to Anurag patch [1] and a thread [2] from earlier
Where Anurags patch focus on setting U1/U2 latency in the BOS
descriptor from the devicetree, this patch focuses on having a configfs
interface for forcing the UDC (here the dwc3) to not enable U1/U2 and
reject the SET_SEL(U1/U2).
Looking forward to input.
[1] https://www.spinics.net/lists/linux-usb/msg179732.html
[2] https://www.spinics.net/lists/linux-usb/msg179393.html
next prev parent reply other threads:[~2019-05-07 9:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 9:09 [PATCH] usb: gadget: configfs: Add lpm_Ux_disable Claus H. Stovgaard
2019-05-07 9:37 ` Claus H. Stovgaard [this message]
2019-05-07 18:53 ` Thinh Nguyen
2019-05-07 21:28 ` Claus H. Stovgaard
2019-05-08 8:10 ` Anurag Kumar Vulisha
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