linux-kernel - Re: [PATCH 2/2] usb: dwc3: qcom: Support firmware-managed resource states for power management

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Message-ID: <1df4fa7a-4b52-4816-bfa3-39afb5c7ad84@kernel.org>
Date: Thu, 27 Nov 2025 13:14:26 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Sriram Dash <sriram.dash@....qualcomm.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Wesley Cheng <quic_wcheng@...cinc.com>,
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: jack.pham@....qualcomm.com, faisal.hassan@....qualcomm.com,
 krishna.kurapati@....qualcomm.com, andersson@...nel.org,
 linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Konrad Dybcio <konradybcio@...nel.org>,
 Shazad Hussain <shazad.hussain@....qualcomm.com>
Subject: Re: [PATCH 2/2] usb: dwc3: qcom: Support firmware-managed resource
 states for power management

On 27/11/2025 11:31, Sriram Dash wrote:
> Add support for firmware-managed resource states in the
> Qualcomm DWC3 USB controller driver. On platforms
> like sa8255p, where controller resources are abstracted
> and managed collectively by firmware, the driver communicates
> power management transitions using dedicated resource state
> levels via dev_pm_opp_set_level().
> 
> Macros are introduced to represent key lifecycle events:
> initialization, system and runtime suspend/resume, and exit.
> The driver sets the appropriate resource state during probe,
> remove, suspend, and resume operations, enabling bulk ON/OFF
> transitions of grouped resources according to the
> controller's operational state.
> 
> Signed-off-by: Sriram Dash <sriram.dash@....qualcomm.com>
> Co-developed-by: Shazad Hussain <shazad.hussain@....qualcomm.com>
> Signed-off-by: Shazad Hussain <shazad.hussain@....qualcomm.com>


Messed order of tags. Please read carefully submitting patches, so you
understand what you certify before you actually certify.

Best regards,
Krzysztof