[PATCH v3 0/2] perf: marvell: Add CN20K DDR PMU support

Geetha sowjanya
2026-04-01T08:17:11Z

This series adds support for the Marvell CN20K DRAM Subsystem (DSS)
performance monitor in the existing marvell_cn10k_ddr_pmu driver, and
documents the device tree binding for the new compatible string.

The CN20K PMU provides eight programmable counters and two fixed
counters (DDR reads and writes). Patch 1 adds the devicetree schema for
"marvell,cn20k-ddr-pmu". Patch 2 wires OF and ACPI (MRVL000B) match
entries, adds CN20K register offsets and event maps, and refactors
platform data to use silicon variant flags.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>

Changes in v2:
- Fixed YAML syntax error triggered by a tab character in the examples
section, which caused dt_binding_check to fail.

Changes in v1:
- Added a description field to the binding.
- Simplified the compatible property using 'const' instead of 'items/enum'.
- Updated the example node name to include a unit-address matching the reg base.

Geetha sowjanya (2):
dt-bindings: perf: marvell: Document CN20K DDR PMU
perf: marvell: Add CN20K DDR PMU support

.../bindings/perf/marvell-cn20k-ddr.yaml | 37 ++++
drivers/perf/marvell_cn10k_ddr_pmu.c | 186 ++++++++++++++++--
2 files changed, 207 insertions(+), 16 deletions(-)
create mode 100644 Documentation/devicetree/bindings/perf/marvell-cn20k-ddr.yaml

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2.25.1