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Date: Mon, 17 Mar 2025 12:30:08 -0500
From: Bjorn Helgaas <helgaas@kernel.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Frank Li <Frank.Li@nxp.com>, Tony Lindgren <tony@atomide.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Siddharth Vadapalli <s-vadapalli@ti.com>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <kw@linux.com>,
	Bjorn Helgaas <bhelgaas@google.com>, linux-omap@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC NOT TESTED 0/2] PCI: dra7xx: Try to clean up
 dra7xx_pcie_cpu_addr_fixup()
Message-ID: <20250317173008.GA933389@bhelgaas>
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In-Reply-To: <20250313060521.kjue4la47xd7g4te@thinkpad>

On Thu, Mar 13, 2025 at 11:35:21AM +0530, Manivannan Sadhasivam wrote:
> On Wed, Mar 05, 2025 at 11:20:21AM -0500, Frank Li wrote:
> > This patches basic on
> > https://lore.kernel.org/imx/20250128-pci_fixup_addr-v9-0-3c4bb506f665@nxp.com/
> > 
> > I have not hardware to test.
> > 
> > Look for driver owner, who help test this and start move forward to remove
> > cpu_addr_fixup() work.
> 
> If you remove cpu_addr_fixup() callback, it will break backwards
> compatibility with old DTs.

Do you have any pointers to DTs that will be broken?  Or to commits
where they were fixed?

> You should fix the existing DTs and continue carrying the callback
> for a while.

Any insight into where these existing DTs are used and how long
they're likely to live?

Bjorn