linux-kernel - Re: [PATCH 1/3] dt-bindings: PCI: qcom,pcie-sm8550: document 'global' interrupt

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Message-ID: <20250115113505.GM4176564@rocinante>
Date: Wed, 15 Jan 2025 20:35:05 +0900
From: Krzysztof Wilczyński <kw@...ux.com>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: PCI: qcom,pcie-sm8550: document
 'global' interrupt

Hello,

> Qcom PCIe RC controllers are capable of generating 'global' SPI interrupt
> to the host CPU. This interrupt can be used by the device driver to handle
> PCIe link specific events such as Link up and Link down, which give the
> driver a chance to start bus enumeration on its own when link is up and
> initiate link training if link goes to a bad state. The PCIe driver can
> still work without this interrupt but it will provide a nice user
> experience when device gets plugged and removed.
> 
> Document the interrupt as optional for SM8550 and SM8650 platforms.

Applied to dt-bindings for v6.14, thank you!

	Krzysztof