linux-kernel - Re: [PATCH v4 0/5] arm64: dts: qcom: sc8280xp: PCIe fixes and GICv3 ITS enable

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Message-ID: <ZeszAWpz8KtuPI2a@hovoldconsulting.com>
Date: Fri, 8 Mar 2024 16:47:13 +0100
From: Johan Hovold <johan@...nel.org>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
	Bjorn Andersson <andersson@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/5] arm64: dts: qcom: sc8280xp: PCIe fixes and GICv3
 ITS enable

On Wed, Mar 06, 2024 at 10:56:46AM +0100, Johan Hovold wrote:
> This series addresses a few problems with the sc8280xp PCIe
> implementation.

> Qualcomm has now confirmed that this is an issue on sc8280xp and its
> derivate platforms. Specifically, the PHY configuration used on these
> platforms is not correctly tuned for L0s and there is currently no
> updated configuration available.
> 
> As we are now at 6.8-rc7, I've rebased this series on the Qualcomm PCIe
> binding rework in linux-next so that the whole series can be merged for
> 6.9 (the patch to disable l0s and the devicetree fix are both marked for
> stable backport anyway).
> 
> The DT bindings and PCI patch are expected to go through the PCI tree,
> while Bjorn A takes the devicetree updates through the Qualcomm tree.

> Johan Hovold (5):
>   dt-bindings: PCI: qcom: Allow 'required-opps'
>   dt-bindings: PCI: qcom: Do not require 'msi-map-mask'
>   PCI: qcom: Disable ASPM L0s for sc8280xp, sa8540p and sa8295p

Bjorn H, could you pick up these three for 6.9-rc1?

>   arm64: dts: qcom: sc8280xp: add missing PCIe minimum OPP
>   arm64: dts: qcom: sc8280xp: enable GICv3 ITS for PCIe

That way there's a small chance that Bjorn A can be able to squeeze in
the patch to enable ITS in 6.9 too (e.g. if there's an rc8).

Johan