linux-kernel - Re: [PATCH V5 2/4] dt-bindings: ufs: Document bindings for SA8255P UFS Host Controller

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Message-ID: <d472c4e3-8ebb-4681-b688-c99366b43f82@kernel.org>
Date: Tue, 13 Jan 2026 17:00:51 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ram Kumar Dwivedi <ram.dwivedi@....qualcomm.com>, mani@...nel.org,
 alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 James.Bottomley@...senPartnership.com, martin.petersen@...cle.com
Cc: linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Anjana Hari <anjana.hari@....qualcomm.com>
Subject: Re: [PATCH V5 2/4] dt-bindings: ufs: Document bindings for SA8255P
 UFS Host Controller

On 13/01/2026 09:00, Ram Kumar Dwivedi wrote:
> Document the device tree bindings for UFS host controller on
> Qualcomm SA8255P platform which integrates firmware-managed
> resources.
> 
> The platform firmware implements the SCMI server and manages
> resources such as the PHY, clocks, regulators and resets via the
> SCMI power protocol. As a result, the OS-visible DT only describes
> the controller’s MMIO, interrupt, IOMMU and power-domain interfaces.
> 
> The generic "qcom,ufshc" and "jedec,ufs-2.0" compatible strings are
> removed from the binding, since this firmware managed design won't
> be compatible with the drivers doing full resource management.
> 
> Co-developed-by: Anjana Hari <anjana.hari@....qualcomm.com>
> Signed-off-by: Anjana Hari <anjana.hari@....qualcomm.com>
> Signed-off-by: Ram Kumar Dwivedi <ram.dwivedi@....qualcomm.com>


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>

Best regards,
Krzysztof