| From: |
| Krzysztof Kozlowski <krzysztof.kozlowski-AT-linaro.org> |
| To: |
| Krzysztof Kozlowski <krzysztof.kozlowski-AT-linaro.org>, Andy Gross <agross-AT-kernel.org>, Bjorn Andersson <bjorn.andersson-AT-linaro.org>, Georgi Djakov <djakov-AT-kernel.org>, Rob Herring <robh+dt-AT-kernel.org>, Viresh Kumar <vireshk-AT-kernel.org>, Nishanth Menon <nm-AT-ti.com>, Stephen Boyd <sboyd-AT-kernel.org>, "Rafael J. Wysocki" <rafael-AT-kernel.org>, linux-arm-msm-AT-vger.kernel.org, linux-pm-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org |
| Subject: |
| [PATCH 0/4] soc/PM/arm64: qcom: Add initial version of bwmon |
| Date: |
| Mon, 02 May 2022 19:40:42 +0200 |
| Message-ID: |
| <20220502174046.139234-1-krzysztof.kozlowski@linaro.org> |
| Archive-link: |
| Article |
Hi,
BWMON is a data bandwidth monitor providing throughput/bandwidth over certain
interconnect links in a SoC. It might be used to gather current bus usage and
vote for interconnect bandwidth, thus adjusting the bus speed based on actual
usage.
The work is built on top of Thara Gopinath's patches with several cleanups,
changes and simplifications.
This is "initial version", which means the work is not finished. The goal is
to add support for further devices (version 5 of bwmon) and usage of devfreq
governors, similarly to tegra30 devfreq driver.
Best regards,
Krzysztof
Krzysztof Kozlowski (4):
dt-bindings: interconnect: qcom,sdm845-cpu-bwmon: add BWMON device
opp: Add apis to retrieve opps with interconnect bandwidth
soc: qcom: icc-bwmon: Add bandwidth monitoring driver
arm64: dts: qcom: sdm845: Add CPU BWMON
.../interconnect/qcom,sdm845-cpu-bwmon.yaml | 105 ++++++
MAINTAINERS | 7 +
arch/arm64/boot/dts/qcom/sdm845.dtsi | 60 ++++
drivers/opp/core.c | 120 +++++++
drivers/soc/qcom/Kconfig | 10 +
drivers/soc/qcom/Makefile | 1 +
drivers/soc/qcom/icc-bwmon.c | 328 ++++++++++++++++++
include/linux/pm_opp.h | 19 +
8 files changed, 650 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interconnect/qcom,sdm845-cpu-bwmon.yaml
create mode 100644 drivers/soc/qcom/icc-bwmon.c
--
2.32.0
