From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: "Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Hector Martin" <marcan@marcan.st>,
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"Broadcom internal kernel review list"
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"Jim Quinlan" <jim2101024@gmail.com>,
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"Linus Walleij" <linus.walleij@linaro.org>,
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"Ryder Lee" <ryder.lee@mediatek.com>,
"Jianjun Wang" <jianjun.wang@mediatek.com>,
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<angelogioacchino.delregno@collabora.com>,
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linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, asahi@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org,
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Subject: Re: [PATCH v2 2/4] dt-bindings: PCI: mediatek,mt7621: add missing child node reg
Date: Thu, 11 Apr 2024 08:01:37 +0200 [thread overview]
Message-ID: <458ce909-0616-487d-b4bd-42b58d059198@linaro.org> (raw)
In-Reply-To: <20240410212638.GA2159326@bhelgaas>
On 10/04/2024 23:26, Bjorn Helgaas wrote:
> On Wed, Apr 10, 2024 at 08:15:19PM +0200, Krzysztof Kozlowski wrote:
>> MT7621 PCI host bridge has children which apparently are also PCI host
>> bridges, at least that's what the binding suggest.
>
> What does it even mean for a PCI host bridge to have a child that is
> also a PCI host bridge?
>
> Does this mean a driver binds to the "parent" host bridge, enumerates
> the PCI devices below it, and finds a "child" host bridge?
I think the question should be towards Mediatek folks. I don't know what
this hardware is exactly, just looks like pci-pci-bridge. The driver
calls the children host bridges as "ports".
Best regards,
Krzysztof
next prev parent reply other threads:[~2024-04-11 6:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-10 18:15 [PATCH v2 1/4] dt-bindings: PCI: cdns,cdns-pcie-host: drop redundant msi-parent and pci-bus.yaml Krzysztof Kozlowski
2024-04-10 18:15 ` [PATCH v2 2/4] dt-bindings: PCI: mediatek,mt7621: add missing child node reg Krzysztof Kozlowski
2024-04-10 21:26 ` Bjorn Helgaas
2024-04-11 6:01 ` Krzysztof Kozlowski [this message]
2024-04-11 6:13 ` Sergio Paracuellos
2024-04-11 6:20 ` Krzysztof Kozlowski
2024-04-11 6:37 ` Sergio Paracuellos
2024-04-11 12:39 ` Bjorn Helgaas
2024-04-11 13:33 ` Sergio Paracuellos
2024-04-11 14:21 ` Rob Herring
2024-04-11 16:11 ` Bjorn Helgaas
2024-04-11 17:41 ` Rob Herring
2024-04-10 18:15 ` [PATCH v2 3/4] dt-bindings: PCI: host-bridges: switch from deprecated pci-bus.yaml Krzysztof Kozlowski
2024-04-10 18:15 ` [PATCH v2 4/4] dt-bindings: PCI: mediatek,mt7621-pcie: " Krzysztof Kozlowski
2024-04-10 19:32 ` Rob Herring
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