linux-kernel - [PATCH v2 0/3] Enable QoS configuration on QCS8300

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Message-ID: <20260127090116.1438780-1-odelu.kukatla@oss.qualcomm.com>
Date: Tue, 27 Jan 2026 14:31:13 +0530
From: Odelu Kukatla <odelu.kukatla@....qualcomm.com>
To: Georgi Djakov <djakov@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Raviteja Laggyshetty <raviteja.laggyshetty@....qualcomm.com>,
        Odelu Kukatla <odelu.kukatla@....qualcomm.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mike Tipton <mike.tipton@....qualcomm.com>
Subject: [PATCH v2 0/3] Enable QoS configuration on QCS8300

This series enables QoS configuration for QNOC type device which
can be found on QCS8300 platform. It enables QoS configuration
for master ports with predefined priority and urgency forwarding.
This helps in prioritizing the traffic originating from different
interconnect masters at NOC (Network On Chip). 
The system may function normally without this feature. However,
enabling QoS helps optimize latency and bandwidth across subsystems
like CPU, GPU, and multimedia engines, which becomes important in
high-throughput scenarios. This is a feature aimed at performance
enhancement to improve system performance under concurrent workloads.

Changes in v2:
 - Updated the binding so that the `clocks` property accurately
   reflects the hardware and does not allow describing non-existing
   hardware (same approach as followed on sa8775p)
 - Corrected patch subject to follow dt-bindings prefix conventions
 - Reworked commit message and binding text to drop "optional" wording
   and perfomance related description
 - Dropped the redundant additional example in bindings

Odelu Kukatla (3):
  dt-bindings: interconnect: qcom,qcs8300-rpmh: add clocks property to
    enable QoS
  interconnect: qcom: qcs8300: enable QoS configuration
  arm64: dts: qcom: qcs8300: Add clocks for QoS configuration

 .../interconnect/qcom,qcs8300-rpmh.yaml       |  63 +++
 arch/arm64/boot/dts/qcom/monaco.dtsi          |   6 +
 drivers/interconnect/qcom/qcs8300.c           | 375 ++++++++++++++++++
 3 files changed, 444 insertions(+)

-- 
2.43.0