From: Aniruddha Rao <anrao@nvidia.com>
To: <thierry.reding@kernel.org>, <jonathanh@nvidia.com>
Cc: <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
"Aniruddha Rao" <anrao@nvidia.com>
Subject: [PATCH 0/6] firmware: tegra: bpmp: Add Tegra410 ACPI MBWT support
Date: Mon, 15 Jun 2026 08:37:25 +0000 [thread overview]
Message-ID: <20260615083731.888055-1-anrao@nvidia.com> (raw)
Tegra410, an ACPI-based platform, provides Memory Bandwidth Throttler
(MBWT) controls for PCIe and GPU connected over chip-to-chip link
(Nv-Clink) traffic on the path to DRAM. These controls are accessible
through BPMP firmware.
The current Tegra BPMP driver depends on Device Tree based transport
setup and does not support ACPI-based platforms. This series keeps the
existing DT path unchanged, adds ACPI support to the BPMP driver,
defines the MBWT BPMP ABI, adds Tegra410 MBWT helper functions, and
exposes a narrow sysfs interface for ACPI-based Tegra410 systems when
firmware reports support for the required MBWT requests.
Aniruddha Rao (6):
soc/tegra: Add Tegra410 SoC Kconfig symbol
firmware: tegra: bpmp: Move channel, resource init to helper
firmware: tegra: bpmp: Add ACPI support
firmware: tegra: bpmp: Add the Memory Bandwidth Throttler ABI
definitions
firmware: tegra: bpmp: Add Tegra410 MBWT BPMP helpers
firmware: tegra: bpmp: Add Tegra410 MBWT sysfs interface
.../ABI/testing/sys-platform-tegra-bpmp | 51 ++++
drivers/firmware/tegra/Makefile | 2 +
drivers/firmware/tegra/bpmp-private.h | 42 +++
drivers/firmware/tegra/bpmp-tegra-sysfs.c | 210 ++++++++++++++
drivers/firmware/tegra/bpmp-tegra410.c | 108 +++++++
drivers/firmware/tegra/bpmp.c | 272 ++++++++++++++----
drivers/soc/tegra/Kconfig | 10 +
include/soc/tegra/bpmp-abi.h | 161 ++++++++++-
8 files changed, 807 insertions(+), 49 deletions(-)
create mode 100644 Documentation/ABI/testing/sys-platform-tegra-bpmp
create mode 100644 drivers/firmware/tegra/bpmp-tegra-sysfs.c
create mode 100644 drivers/firmware/tegra/bpmp-tegra410.c
--
2.43.0
next reply other threads:[~2026-06-15 8:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-15 8:37 Aniruddha Rao [this message]
2026-06-15 8:37 ` [PATCH 1/6] soc/tegra: Add Tegra410 SoC Kconfig symbol Aniruddha Rao
2026-07-10 9:34 ` Thierry Reding
2026-06-15 8:37 ` [PATCH 2/6] firmware: tegra: bpmp: Move channel, resource init to helper Aniruddha Rao
2026-07-10 9:39 ` Thierry Reding
2026-06-15 8:37 ` [PATCH 3/6] firmware: tegra: bpmp: Add ACPI support Aniruddha Rao
2026-07-10 10:08 ` Thierry Reding
2026-06-15 8:37 ` [PATCH 4/6] firmware: tegra: bpmp: Add the Memory Bandwidth Throttler ABI definitions Aniruddha Rao
2026-07-10 10:13 ` Thierry Reding
2026-06-15 8:37 ` [PATCH 5/6] firmware: tegra: bpmp: Add Tegra410 MBWT BPMP helpers Aniruddha Rao
2026-07-10 10:19 ` Thierry Reding
2026-06-15 8:37 ` [PATCH 6/6] firmware: tegra: bpmp: Add Tegra410 MBWT sysfs interface Aniruddha Rao
2026-07-10 10:46 ` Thierry Reding
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