linux-kernel - Re: [PATCH 2/2] PCI: qcom-ep: Add support for firmware-managed PCIe Endpoint

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Message-ID: <73508b26-bc71-4661-bf2d-cfce0eb1df13@oss.qualcomm.com>
Date: Fri, 5 Dec 2025 07:08:21 -0800
From: Jeff Johnson <jeff.johnson@....qualcomm.com>
To: Mrinmay Sarkar <mrinmay.sarkar@....qualcomm.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kwilczynski@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@....qualcomm.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>,
        Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>,
        quic_vbadigan@...cinc.com, quic_shazhuss@...cinc.com,
        konrad.dybcio@....qualcomm.com, Rama Krishna <quic_ramkri@...cinc.com>,
        Ayiluri Naga Rashmi <quic_nayiluri@...cinc.com>,
        Nitesh Gupta <quic_nitegupt@...cinc.com>
Subject: Re: [PATCH 2/2] PCI: qcom-ep: Add support for firmware-managed PCIe
 Endpoint

On 12/3/2025 5:26 AM, Mrinmay Sarkar wrote:
> Some Qualcomm platforms use firmware to manage PCIe resources such as
> clocks, resets, and PHY through the SCMI interface. In these cases,
> the Linux driver should not perform resource enable or disable
> operations directly. Additionally, runtime PM support has been enabled
> to ensure proper power state transitions.
> 
> This commit introduces a `firmware_managed` flag in the Endpoint

please review:
https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes

"Describe your changes in imperative mood"