linux-kernel - Re: [PATCH V5 1/4] ufs: dt-bindings: Document gear and rate limit properties

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Message-ID: <20250903-sincere-brass-rhino-19f61a@kuoka>
Date: Wed, 3 Sep 2025 08:44:33 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
Cc: alim.akhtar@...sung.com, avri.altman@....com, bvanassche@....org, 
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, mani@...nel.org, 
	James.Bottomley@...senpartnership.com, martin.petersen@...cle.com, linux-scsi@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH V5 1/4] ufs: dt-bindings: Document gear and rate limit
 properties

On Tue, Sep 02, 2025 at 10:18:57PM +0530, Ram Kumar Dwivedi wrote:
> Add optional "limit-hs-gear" and "limit-rate" properties to the
> UFS controller common binding. These properties allow limiting
> the maximum HS gear and rate.
> 
> This is useful in cases where the customer board may have signal
> integrity, clock configuration or layout issues that prevent reliable
> operation at higher gears. Such limitations are especially critical in
> those platforms, where stability is prioritized over peak performance.
> 
> Signed-off-by: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
> ---
>  .../devicetree/bindings/ufs/ufs-common.yaml      | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof