Re: USB-C DisplayPort display failing to stay active with Intel Barlow Ridge USB4 controller, power-management related issue?

[Gil Fine <gil.fine@linux.intel.com>]

Hi,
Got reponse from Oren that B0 BarlowRidge controller is not longer supported,
and the last thunderbolt firmware we released for B0 is 16.3 , from here:
https://www.intel.com/content/www/us/en/secure/design/confidential/software-kits/kit-details.html?kitId=821065&wapkw=barlow%20ridge%20nvm%20b0

So @Aaron, please try with that one.

Thanks !

On Sun, Jan 26, 2025 at 06:12:18PM +0200, Gil Fine wrote:
> Hi,
> 
> + Oren
> 
> On Sun, Jan 26, 2025 at 07:53:47AM +0200, Mika Westerberg wrote:
> > On Fri, Jan 24, 2025 at 05:05:40PM -0600, Aaron Rainbolt wrote:
> > > On Fri, 15 Nov 2024 15:20:22 +0200
> > > Mika Westerberg <mika.westerberg@linux.intel.com> wrote:
> > > 
> > > > Hi,
> > > > 
> > > > On Thu, Nov 14, 2024 at 10:41:25AM -0600, Aaron Rainbolt wrote:
> > > > > This is production hardware (specifically Clevo's X370SNW1-G and
> > > > > X370SNV1-G laptops), available for purchase from Sager, XOTICPC,
> > > > > Schenker, likely many other resellers, and our own website
> > > > > at https://kfocus.org/spec/spec-m2.html (with a tool that allows users
> > > > > to work around the bug). The firmware is baked into the hardware
> > > > > provided to us by our ODM, and for the sake of stability we do not
> > > > > modify any firmware on the machines with the exception of applying
> > > > > BIOS updates provided to us directly by the ODM. They appear to get
> > > > > their firmware directly from Clevo.  
> > > > 
> > > > Okay thanks.
> > > > 
> > > > > We have requested an updated BIOS from the ODM. If one is
> > > > > available, we will upgrade and run the tests again.  
> > > > 
> > > > Yes, I hope you can get the firmwares. The one you have now is not
> > > > "production quality" firmare so you should not really have that there
> > > > in the first place and Clevo should definitely provide you an
> > > > upgrade. Note this is separate from the BIOS. But your BIOS has issue
> > > > too regarding the USB4 power contract that is required by Microsoft
> > > > so I would expect that you should get that one upgraded too.
> > > > 
> > > > The patch I shared earlier should deal with all the other cases except
> > > > that weird one where we do not seem to get unplugs (and the resource
> > > > is available) which is not how the firmware is expected to work. I was
> > > > planning to submit it upstream after some more validation on our end,
> > > > probably afer v6.13-rc1 is released. I'll CC you.
> > > > 
> > > > If/when you get the new firmare I would definitely appreciate if your
> > > > folks could give it a try.
> > > 
> > > Hi Mika, sorry for the very late follow-up, been busy with other work
> > > stuff.
> > 
> > No worries.
> > 
> > > We contacted the ODM to get newer firmware. They contacted Clevo, who
> > > told them that the Barlow Ridge chip in these machines is the B0
> > > revision. According to them, the latest firmware available for the B0
> > > revision is 14.6; they also state that the 56.x firmware is for the B1
> > > revision and is incompatible.
> > > 
> > > Is it possible that the problem is that the driver is written
> > > specifically for the B1 revision and only partially works with the B0
> > > revision?
> > 
> > The driver support is written for USB4 v2 not specifically for certain
> > Barlow Ridge silicon stepping. B0 has issues that B1 fixes but I'm not sure
> > if they are related to this one. My reference host controller is actually
> > B0 and it is running the 56.x firmware IIRC so not incompatible.
> > 
> > @Gil, can you verify this?
> 
> Actually we didn't try use latest BR firmware on old HW like B0 so can't tell
> if all BR features expected to work on B0, but let me add Oren, the contact
> person for these.
> 
> @Oren, Is B0 BarlowRidge is still officially supported?
> I mean do we release newer NVM versions to Clevo for B0 BR?
> 
> -- 
> Thanks,
> Gil

-- 
Thanks,
Gil