arm64: dts: qcom: sc8280xp: enable GICv3 ITS for PCIe

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The DWC PCIe controller can be used with its internal MSI controller or
with an external one such as the GICv3 Interrupt Translation Service
(ITS).

Add the msi-map properties needed to use the GIC ITS. This will also
make Linux switch to the ITS implementation, which allows for assigning
affinity to individual MSIs.

Note that using the GIC ITS on SC8280XP will cause Advanced Error
Reporting (AER) interrupts to be received on errors unlike when using
the internal MSI controller. This will specifically lead to
notifications about Correctable Errors being logged for the Wi-Fi
controller on the Lenovo ThinkPad X13s when ASPM L0s is enabled.

Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240306095651.4551-6-johan+linaro@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

...

This commit is contained in:

Johan Hovold 2024-03-06 10:56:51 +01:00 • committed by Bjorn Andersson

parent 2b62197155

commit 81051f14a6

1 changed files with 11 additions and 1 deletions

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arch/arm64/boot/dts/qcom/sc8280xp.dtsi

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