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Date: Wed, 10 Jan 2024 16:32:03 +0200
From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Sanath S <sanaths2@amd.com>
Cc: Sanath S <Sanath.S@amd.com>, mario.limonciello@amd.com,
	andreas.noever@gmail.com, michael.jamet@intel.com,
	YehezkelShB@gmail.com, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [Patch v2 2/2] thunderbolt: Teardown tunnels and reset
 downstream ports created by boot firmware
Message-ID: <20240110143203.GP2543524@black.fi.intel.com>
References: <20231219180424.GL1074920@black.fi.intel.com>
 <20231220125857.GA2543524@black.fi.intel.com>
 <5bfaa405-b15e-36ef-a4e0-04b93dd983b1@amd.com>
 <257c694f-5aa2-c29b-891d-3a1f480dd4a1@amd.com>
 <20231221095307.GB2543524@black.fi.intel.com>
 <6308b3e6-d935-93cb-b05d-7c9790b091d4@amd.com>
 <20240103171709.GL2543524@black.fi.intel.com>
 <39fc8ce8-baab-bf53-d177-1034dfc81be9@amd.com>
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In-Reply-To: <ff6243f8-4487-2290-1d31-93acbedb27da@amd.com>

On Mon, Jan 08, 2024 at 10:26:13AM +0530, Sanath S wrote:
> 
> On 1/5/2024 12:38 PM, Mika Westerberg wrote:
> > On Thu, Jan 04, 2024 at 07:20:05PM +0530, Sanath S wrote:
> > > On 1/3/2024 10:47 PM, Mika Westerberg wrote:
> > > > On Wed, Jan 03, 2024 at 07:45:56PM +0530, Sanath S wrote:
> > > > > On 12/21/2023 3:23 PM, Mika Westerberg wrote:
> > > > > > On Thu, Dec 21, 2023 at 03:01:50PM +0530, Sanath S wrote:
> > > > > > > > Sure. I'll check with these combinations.
> > > > > > > Can you name any docks that meets these requirements ? I'll try to get
> > > > > > > hold of it here and check.
> > > > > > Pretty much every Titan Ridge based dock. For instance Dell WD19TB.
> > > > > > 
> > > > > > I have some hardware here that I can use to try it out too.
> > > > > It seems that issue is seen on Dell WD19TB too. So this fix may have to
> > > > > extended to TBT3 as well ?
> > > > Hm, what issue? I thought this works accross all the supported devices
> > > > due to the DFP, no?
> > > > 
> > > > > I'll give it a try this week and share the observation.
> > > Got my hands on Dell WD19TB. And it works!
> > > 
> > > Here is lspci -t output with and without fix
> > > 
> > > without fix:
> > >             +-03.1-[04-62]----00.0-[05-07]--+-02.0-[06]----00.0
> > >             |                               \-04.0-[07]--
> > > With fix:
> > >             +-03.1-[04-62]----00.0-[05-62]--+-02.0-[06]----00.0
> > >             |                               \-04.0-[07-62]--
> > > 
> > > I'll send out v3 with with splitting into 2/3 patches(Will see how it looks
> > > good).
> > Okay and you checked also that with the WD19TB (and its integrated xHCI)
> > there are no additional boot delays because of the reset?
> I did not observe any delays. As now we are not doing any discover as well
> before resetting.

Okay thanks!