linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: sa8155: Add gear and rate limit properties to UFS

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Message-ID: <2a3c8867-7745-4f0a-8618-0f0f1bea1d14@kernel.org>
Date: Thu, 24 Jul 2025 09:48:53 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>, mani@...nel.org,
 alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 andersson@...nel.org, konradybcio@...nel.org,
 James.Bottomley@...senPartnership.com, martin.petersen@...cle.com,
 agross@...nel.org
Cc: linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: qcom: sa8155: Add gear and rate limit
 properties to UFS

On 22/07/2025 18:11, Ram Kumar Dwivedi wrote:
> Add optional limit-hs-gear and limit-rate properties to the UFS node to
> support automotive use cases that require limiting the maximum Tx/Rx HS
> gear and rate due to hardware constraints.

What hardware constraints? This needs to be clearly documented.


Best regards,
Krzysztof