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From: Florian Fainelli <f.fainelli@gmail.com>
To: Jeremy Linton <jeremy.linton@arm.com>, linux-pci@vger.kernel.org
Cc: lorenzo.pieralisi@arm.com, nsaenz@kernel.org,
	bhelgaas@google.com, rjw@rjwysocki.net, lenb@kernel.org,
	robh@kernel.org, kw@linux.com, sdonthineni@nvidia.com,
	stefan.wahren@i2se.com, bcm-kernel-feedback-list@broadcom.com,
	linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rpi-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/4] PCI: brcmstb: Add ACPI config space quirk
Date: Sun, 22 Aug 2021 10:52:25 +0200	[thread overview]
Message-ID: <f2cc62e2-276b-e6a9-3b2c-48a61061be25@gmail.com> (raw)
In-Reply-To: <20210819215655.84866-3-jeremy.linton@arm.com>



On 8/19/2021 11:56 PM, Jeremy Linton wrote:
> The PFTF CM4 is an ACPI platform that isn't ECAM compliant. Its config
> space is in two parts. One part is for the root port registers and a
> second moveable window pointing at a device's 4K config space. Thus it
> doesn't have an MCFG, and any MCFG provided would be nonsense
> anyway. Instead, a Linux specific host bridge _DSD selects a custom
> ECAM ops and cfgres. The cfg op picks between those two regions while
> disallowing problematic accesses.
> 
> Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>

Once you address Bjorn's feedback, feel free to add:

Acked-by: Florian Fainelli <f.fainelli@gmail.com>

I do wonder if squashing patches 2 and 3 would make more sense, 
otherwise we have a bcm2711_pcie_ops that is unused in patch 2.
-- 
Florian

  parent reply	other threads:[~2021-08-22  8:53 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19 21:56 [PATCH v2 0/4] CM4 ACPI PCIe quirk Jeremy Linton
2021-08-19 21:56 ` [PATCH v2 1/4] PCI: brcmstb: Break register definitions into separate header Jeremy Linton
2021-08-22  8:49   ` Florian Fainelli
2021-08-19 21:56 ` [PATCH v2 2/4] PCI: brcmstb: Add ACPI config space quirk Jeremy Linton
2021-08-20 19:06   ` Bjorn Helgaas
2021-08-20 20:31     ` Jeremy Linton
2021-08-22  8:52   ` Florian Fainelli [this message]
2021-08-29 11:13   ` Pali Rohár
2021-08-30 16:10     ` Jeremy Linton
2021-08-30 16:54       ` Pali Rohár
2021-08-19 21:56 ` [PATCH v2 3/4] PCI/ACPI: Add Broadcom bcm2711 MCFG quirk Jeremy Linton
2021-08-22  8:53   ` Florian Fainelli
2021-08-24 21:39     ` Jeremy Linton
2021-08-25 16:23       ` Florian Fainelli
2021-08-19 21:56 ` [PATCH v2 4/4] MAINTAINERS: Widen brcmstb PCIe file scope Jeremy Linton
2021-08-20 19:09   ` Bjorn Helgaas
2021-08-22  8:55     ` Florian Fainelli
2021-08-20 19:11 ` [PATCH v2 0/4] CM4 ACPI PCIe quirk Bjorn Helgaas

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