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platform/mellanox: mlxreg-dpu: Add initial support for Nvidia DPU

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Provide platform support for Nvidia (DPU) Data Processor Unit for the
Smart Switch SN4280.

The Smart Switch equipped with:
- Nvidia COME module based on AMD EPYC™ Embedded 3451 CPU.
- Nvidia Spectrum-3 ASIC.
- Four DPUs, each equipped with Nvidia BF3 ARM based processor and
  with Lattice LFD2NX-40 FPGA device.
- 28xQSFP-DD external ports.
- Two power supplies.
- Four cooling drawers.

Driver provides support for the platform management and monitoring
of DPU components. It includes support for: health events, resets and
boot progress indications logic, implemented by FPGA device.

Reviewed-by: Ciju Rajan K <crajank@nvidia.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
[ij: added depends on I2C]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250421092051.7687-2-vadimp@nvidia.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Vadim Pasternak
2025-04-30 14:05:49 +03:00
committed by Ilpo Järvinen
parent 25b5095a4b
commit d00f779eb0
3 changed files with 625 additions and 0 deletions
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drivers/platform/mellanox/Kconfig
+13
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@@ -27,6 +27,19 @@ config MLX_PLATFORM
If you have a Mellanox system, say Y or M here.
config MLXREG_DPU
tristate "Nvidia Data Processor Unit platform driver support"
depends on I2C
select REGMAP_I2C
help
This driver provides support for the Nvidia BF3 Data Processor Units,
which are the part of SN4280 Ethernet smart switch systems
providing a high performance switching solution for Enterprise Data
Centers (EDC) for building Ethernet based clusters, High-Performance
Computing (HPC) and embedded environments.
If you have a Nvidia smart switch system, say Y or M here.
config MLXREG_HOTPLUG
tristate "Mellanox platform hotplug driver support"
depends on HWMON
drivers/platform/mellanox/Makefile
+1
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@@ -7,6 +7,7 @@ obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o
obj-$(CONFIG_MLXBF_BOOTCTL) += mlxbf-bootctl.o
obj-$(CONFIG_MLXBF_PMC) += mlxbf-pmc.o
obj-$(CONFIG_MLXBF_TMFIFO) += mlxbf-tmfifo.o
obj-$(CONFIG_MLXREG_DPU) += mlxreg-dpu.o
obj-$(CONFIG_MLXREG_HOTPLUG) += mlxreg-hotplug.o
obj-$(CONFIG_MLXREG_IO) += mlxreg-io.o
obj-$(CONFIG_MLXREG_LC) += mlxreg-lc.o
drivers/platform/mellanox/mlxreg-dpu.c
+611
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