Re: [PASEMI] Nemo board doesn't recognize any ATA disks with the pci-v5.16 updates

From: Marc Zyngier <maz@kernel.org>
To: Christian Zigotzky <chzigotzky@xenosoft.de>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
	"bhelgaas@google.com >> Bjorn Helgaas" <bhelgaas@google.com>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	lorenzo.pieralisi@arm.com, Rob Herring <robh@kernel.org>,
	Matthew Leaman <matthew@a-eon.biz>,
	Darren Stevens <darren@stevens-zone.net>,
	mad skateman <madskateman@gmail.com>,
	"R.T.Dickinson" <rtd2@xtra.co.nz>,
	Christian Zigotzky <info@xenosoft.de>,
	axboe@kernel.dk, damien.lemoal@opensource.wdc.com, kw@linux.com,
	Arnd Bergmann <arnd@arndb.de>,
	robert@swiecki.net, Olof Johansson <olof@lixom.net>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: Re: [PASEMI] Nemo board doesn't recognize any ATA disks with the pci-v5.16 updates
Date: Thu, 11 Nov 2021 11:24:04 +0000	[thread overview]
Message-ID: <87o86r7x63.wl-maz@kernel.org> (raw)
In-Reply-To: <c93c7f72-6e46-797b-bee3-c9ae3b444f60@xenosoft.de>

On Thu, 11 Nov 2021 10:44:30 +0000,
Christian Zigotzky <chzigotzky@xenosoft.de> wrote:
> 
> On 11 November 2021 at 11:20 am, Marc Zyngier wrote:
> > On Thu, 11 Nov 2021 07:47:08 +0000,
> > Christian Zigotzky <chzigotzky@xenosoft.de> wrote:
> >> On 11 November 2021 at 08:13 am, Marc Zyngier wrote:
> >>> On Thu, 11 Nov 2021 05:24:52 +0000,
> >>> Christian Zigotzky <chzigotzky@xenosoft.de> wrote:
> >>>> Hello Marc,
> >>>> 
> >>>> Here you are:
> >>>> https://forum.hyperion-entertainment.com/viewtopic.php?p=54406#p54406
> >>> This is not what I asked. I need the actual source file, or at the
> >>> very least the compiled object (the /sys/firmware/fdt file, for
> >>> example). Not an interpretation that I can't feed to the kernel.
> >>> 
> >>> Without this, I can't debug your problem.
> >>> 
> >>>> We are very happy to have the patch for reverting the bad commit
> >>>> because we want to test the new PASEMI i2c driver with support for the
> >>>> Apple M1 [1] on our Nemo boards.
> >>> You can revert the patch on your own. At this stage, we're not blindly
> >>> reverting things in the tree, but instead trying to understand what
> >>> is happening on your particular system.
> >>> 
> >>> Thanks,
> >>> 
> >>> 	M.
> >>> 
> >> I added a download link for the fdt file to the post [1]. Please read
> >> also Darren's comments in this post.
> > 
> > Am I right in understanding that the upstream kernel does not support
> > the machine out of the box, and that you actually have to apply out of
> > tree patches to make it work?
> No, you aren't right. The upstream kernel supports the Nemo board out
> of the box. [1]

That's not the way I interpret Darren's comments, but you surely know
better than I do.

I'll try to come up with something for you to test shortly.

	M.

-- 
Without deviation from the norm, progress is not possible.