From: Krzysztof Kozlowski <krzk@kernel.org>
To: Bart Van Assche <bvanassche@acm.org>,
Ram Kumar Dwivedi <quic_rdwivedi@quicinc.com>,
alim.akhtar@samsung.com, avri.altman@wdc.com, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org, mani@kernel.org,
James.Bottomley@HansenPartnership.com,
martin.petersen@oracle.com
Cc: linux-scsi@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH V3 1/4] ufs: dt-bindings: Document gear and rate limit properties
Date: Thu, 28 Aug 2025 19:40:55 +0200 [thread overview]
Message-ID: <25844eea-a41c-4a36-b132-8824e629568d@kernel.org> (raw)
In-Reply-To: <9944c595-da68-43c0-8364-6a8665a0fc3f@acm.org>
On 26/08/2025 17:35, Bart Van Assche wrote:
>
>> + limit-rate:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + enum: [1, 2]
>> + default: 2
>> + description:
>> + Restricts the UFS controller to Rate A (1) or Rate B (2) for both
>> + TX and RX directions, often required in automotive environments due
>> + to hardware limitations.
>
> As far as I know no numeric values are associated with these rates in
> the UFSHCI 4.1 standard nor in any of the previous versions of this
> standard. Does the .yaml syntax support something like "enum: [A, B]"?
That's what I also requested and answer was "1" and "2" are coming from
the spec. So now I am confused.
Best regards,
Krzysztof
next prev parent reply other threads:[~2025-08-28 17:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-26 15:08 [PATCH V3 0/4] Add DT-based gear and rate limiting support Ram Kumar Dwivedi
2025-08-26 15:08 ` [PATCH V3 1/4] ufs: dt-bindings: Document gear and rate limit properties Ram Kumar Dwivedi
2025-08-26 15:35 ` Bart Van Assche
2025-08-28 16:25 ` Ram Kumar Dwivedi
2025-08-28 17:41 ` Krzysztof Kozlowski
2025-08-28 16:45 ` Ram Kumar Dwivedi
2025-08-28 17:22 ` Bart Van Assche
2025-09-01 4:07 ` Manivannan Sadhasivam
2025-09-01 16:01 ` Ram Kumar Dwivedi
2025-08-28 17:41 ` Krzysztof Kozlowski
2025-08-28 17:40 ` Krzysztof Kozlowski [this message]
2025-08-28 18:27 ` Bart Van Assche
2025-08-26 15:08 ` [PATCH V3 2/4] ufs: ufs-qcom: Remove redundant re-assignment to hs_rate Ram Kumar Dwivedi
2025-08-26 15:08 ` [PATCH V3 3/4] ufs: pltfrm: Allow limiting HS gear and rate via DT Ram Kumar Dwivedi
2025-08-26 15:08 ` [PATCH V3 4/4] ufs: ufs-qcom: Add support for limiting HS gear and rate Ram Kumar Dwivedi
2025-08-26 15:37 ` Bart Van Assche
2025-08-28 16:28 ` Ram Kumar Dwivedi
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