linux-kernel - [PATCH V1 0/3] Add DT-based gear and rate limiting support

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Message-ID: <20250722161103.3938-1-quic_rdwivedi@quicinc.com>
Date: Tue, 22 Jul 2025 21:41:00 +0530
From: Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
To: <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: [PATCH V1 0/3] Add DT-based gear and rate limiting support

This patch series adds support for limiting the maximum high-speed
gear and rate used by the UFS controller on Qualcomm platforms via
device tree.

Some automotive platforms, such as SA8155, require restricting the
maximum gear or rate due to hardware limitations. To support this,
the driver is extended to parse two new optional DT properties and
apply them during initialization. The default behavior remains
unchanged if these properties are not specified.

Ram Kumar Dwivedi (3):
  scsi: ufs: qcom: Add support for DT-based gear and rate limiting
  arm64: dts: qcom: sa8155: Add gear and rate limit properties to UFS
  dt-bindings: ufs: qcom: Document HS gear and rate limit properties

 .../devicetree/bindings/ufs/qcom,ufs.yaml     | 10 +++++++
 arch/arm64/boot/dts/qcom/sm8150.dtsi          |  3 ++
 drivers/ufs/host/ufs-qcom.c                   | 29 +++++++++++++++----
 3 files changed, 36 insertions(+), 6 deletions(-)

-- 
2.50.1